Home / 39,045.68-53,882.96-21,140.70

Finding the Fourth Proportional to 39,045.68, 53,882.96 and 21,140.70

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Solution

The fourth proportional to 39,045.68, 53,882.96 and 21,140.70 is: 29,174.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,045.68 : 53,882.96 = 21,140.70 : x
  2. Step 2: Convert to fraction form
    39,045.68/53,882.96 = 21,140.70/x
  3. Step 3: Cross multiply
    39,045.68x = 53,882.96 × 21,140.70
  4. Step 4: Simplify right side
    39,045.68x = 1,139,123,492.47
  5. Step 5: Solve for x
    x = 1,139,123,492.47/39,045.68
  6. Step 6: Final answer
    x = 29,174.12

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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.