Home / 10,085.28-15,127.95-3,509.90

Finding the Fourth Proportional to 10,085.28, 15,127.95 and 3,509.90

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Solution

The fourth proportional to 10,085.28, 15,127.95 and 3,509.90 is: 5,264.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.28 : 15,127.95 = 3,509.90 : x
  2. Step 2: Convert to fraction form
    10,085.28/15,127.95 = 3,509.90/x
  3. Step 3: Cross multiply
    10,085.28x = 15,127.95 × 3,509.90
  4. Step 4: Simplify right side
    10,085.28x = 53,097,516.07
  5. Step 5: Solve for x
    x = 53,097,516.07/10,085.28
  6. Step 6: Final answer
    x = 5,264.85

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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.