Home / 23,180.81-31,970.88-15,624.38

Finding the Fourth Proportional to 23,180.81, 31,970.88 and 15,624.38

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Solution

The fourth proportional to 23,180.81, 31,970.88 and 15,624.38 is: 21,549.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,180.81 : 31,970.88 = 15,624.38 : x
  2. Step 2: Convert to fraction form
    23,180.81/31,970.88 = 15,624.38/x
  3. Step 3: Cross multiply
    23,180.81x = 31,970.88 × 15,624.38
  4. Step 4: Simplify right side
    23,180.81x = 499,525,178.05
  5. Step 5: Solve for x
    x = 499,525,178.05/23,180.81
  6. Step 6: Final answer
    x = 21,549.08

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Half scale
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Double scale
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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.