Home / 39,159.99-54,041.18-21,255.17

Finding the Fourth Proportional to 39,159.99, 54,041.18 and 21,255.17

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Solution

The fourth proportional to 39,159.99, 54,041.18 and 21,255.17 is: 29,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,159.99 : 54,041.18 = 21,255.17 : x
  2. Step 2: Convert to fraction form
    39,159.99/54,041.18 = 21,255.17/x
  3. Step 3: Cross multiply
    39,159.99x = 54,041.18 × 21,255.17
  4. Step 4: Simplify right side
    39,159.99x = 1,148,654,091.42
  5. Step 5: Solve for x
    x = 1,148,654,091.42/39,159.99
  6. Step 6: Final answer
    x = 29,332.34

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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.