Home / 15,812.72-23,721.28-5,423.12

Finding the Fourth Proportional to 15,812.72, 23,721.28 and 5,423.12

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Solution

The fourth proportional to 15,812.72, 23,721.28 and 5,423.12 is: 8,135.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.72 : 23,721.28 = 5,423.12 : x
  2. Step 2: Convert to fraction form
    15,812.72/23,721.28 = 5,423.12/x
  3. Step 3: Cross multiply
    15,812.72x = 23,721.28 × 5,423.12
  4. Step 4: Simplify right side
    15,812.72x = 128,643,347.99
  5. Step 5: Solve for x
    x = 128,643,347.99/15,812.72
  6. Step 6: Final answer
    x = 8,135.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.