Home / 39,151.99-54,030.14-21,247.17

Finding the Fourth Proportional to 39,151.99, 54,030.14 and 21,247.17

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Solution

The fourth proportional to 39,151.99, 54,030.14 and 21,247.17 is: 29,321.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,151.99 : 54,030.14 = 21,247.17 : x
  2. Step 2: Convert to fraction form
    39,151.99/54,030.14 = 21,247.17/x
  3. Step 3: Cross multiply
    39,151.99x = 54,030.14 × 21,247.17
  4. Step 4: Simplify right side
    39,151.99x = 1,147,987,569.70
  5. Step 5: Solve for x
    x = 1,147,987,569.70/39,151.99
  6. Step 6: Final answer
    x = 29,321.31

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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.