Home / 19,715.78-29,557.34-7,862.24

Finding the Fourth Proportional to 19,715.78, 29,557.34 and 7,862.24

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Solution

The fourth proportional to 19,715.78, 29,557.34 and 7,862.24 is: 11,786.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,715.78 : 29,557.34 = 7,862.24 : x
  2. Step 2: Convert to fraction form
    19,715.78/29,557.34 = 7,862.24/x
  3. Step 3: Cross multiply
    19,715.78x = 29,557.34 × 7,862.24
  4. Step 4: Simplify right side
    19,715.78x = 232,386,861.53
  5. Step 5: Solve for x
    x = 232,386,861.53/19,715.78
  6. Step 6: Final answer
    x = 11,786.85

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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.