Home / 14,082.28-21,129.67-7,417.15

Finding the Fourth Proportional to 14,082.28, 21,129.67 and 7,417.15

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Solution

The fourth proportional to 14,082.28, 21,129.67 and 7,417.15 is: 11,129.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,082.28 : 21,129.67 = 7,417.15 : x
  2. Step 2: Convert to fraction form
    14,082.28/21,129.67 = 7,417.15/x
  3. Step 3: Cross multiply
    14,082.28x = 21,129.67 × 7,417.15
  4. Step 4: Simplify right side
    14,082.28x = 156,721,931.84
  5. Step 5: Solve for x
    x = 156,721,931.84/14,082.28
  6. Step 6: Final answer
    x = 11,129.02

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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.