Home / 15,168.28-20,925.08-9,861.16

Finding the Fourth Proportional to 15,168.28, 20,925.08 and 9,861.16

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Solution

The fourth proportional to 15,168.28, 20,925.08 and 9,861.16 is: 13,603.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.28 : 20,925.08 = 9,861.16 : x
  2. Step 2: Convert to fraction form
    15,168.28/20,925.08 = 9,861.16/x
  3. Step 3: Cross multiply
    15,168.28x = 20,925.08 × 9,861.16
  4. Step 4: Simplify right side
    15,168.28x = 206,345,561.89
  5. Step 5: Solve for x
    x = 206,345,561.89/15,168.28
  6. Step 6: Final answer
    x = 13,603.75

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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.