Home / 39,342.69-54,292.17-21,437.82

Finding the Fourth Proportional to 39,342.69, 54,292.17 and 21,437.82

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Solution

The fourth proportional to 39,342.69, 54,292.17 and 21,437.82 is: 29,583.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,342.69 : 54,292.17 = 21,437.82 : x
  2. Step 2: Convert to fraction form
    39,342.69/54,292.17 = 21,437.82/x
  3. Step 3: Cross multiply
    39,342.69x = 54,292.17 × 21,437.82
  4. Step 4: Simplify right side
    39,342.69x = 1,163,905,767.87
  5. Step 5: Solve for x
    x = 1,163,905,767.87/39,342.69
  6. Step 6: Final answer
    x = 29,583.79

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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.