Home / 20,840.70-28,773.60-18,598.74

Finding the Fourth Proportional to 20,840.70, 28,773.60 and 18,598.74

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Solution

The fourth proportional to 20,840.70, 28,773.60 and 18,598.74 is: 25,678.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.70 : 28,773.60 = 18,598.74 : x
  2. Step 2: Convert to fraction form
    20,840.70/28,773.60 = 18,598.74/x
  3. Step 3: Cross multiply
    20,840.70x = 28,773.60 × 18,598.74
  4. Step 4: Simplify right side
    20,840.70x = 535,152,705.26
  5. Step 5: Solve for x
    x = 535,152,705.26/20,840.70
  6. Step 6: Final answer
    x = 25,678.25

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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.