Home / 15,535.89-21,432.20-10,501.87

Finding the Fourth Proportional to 15,535.89, 21,432.20 and 10,501.87

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Solution

The fourth proportional to 15,535.89, 21,432.20 and 10,501.87 is: 14,487.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.89 : 21,432.20 = 10,501.87 : x
  2. Step 2: Convert to fraction form
    15,535.89/21,432.20 = 10,501.87/x
  3. Step 3: Cross multiply
    15,535.89x = 21,432.20 × 10,501.87
  4. Step 4: Simplify right side
    15,535.89x = 225,078,178.21
  5. Step 5: Solve for x
    x = 225,078,178.21/15,535.89
  6. Step 6: Final answer
    x = 14,487.63

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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.