Home / 15,553.54-21,475.65-10,255.78

Finding the Fourth Proportional to 15,553.54, 21,475.65 and 10,255.78

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Solution

The fourth proportional to 15,553.54, 21,475.65 and 10,255.78 is: 14,160.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.54 : 21,475.65 = 10,255.78 : x
  2. Step 2: Convert to fraction form
    15,553.54/21,475.65 = 10,255.78/x
  3. Step 3: Cross multiply
    15,553.54x = 21,475.65 × 10,255.78
  4. Step 4: Simplify right side
    15,553.54x = 220,249,541.76
  5. Step 5: Solve for x
    x = 220,249,541.76/15,553.54
  6. Step 6: Final answer
    x = 14,160.73

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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.