Home / 22,485.19-31,000.71-18,437.10

Finding the Fourth Proportional to 22,485.19, 31,000.71 and 18,437.10

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Solution

The fourth proportional to 22,485.19, 31,000.71 and 18,437.10 is: 25,419.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,485.19 : 31,000.71 = 18,437.10 : x
  2. Step 2: Convert to fraction form
    22,485.19/31,000.71 = 18,437.10/x
  3. Step 3: Cross multiply
    22,485.19x = 31,000.71 × 18,437.10
  4. Step 4: Simplify right side
    22,485.19x = 571,563,259.48
  5. Step 5: Solve for x
    x = 571,563,259.48/22,485.19
  6. Step 6: Final answer
    x = 25,419.55

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Half scale
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Double scale
Find fourth proportional to 22,486.19, 31,002.09 and 18,438.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.