Home / 39,342.14-54,289.91-21,436.28

Finding the Fourth Proportional to 39,342.14, 54,289.91 and 21,436.28

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Solution

The fourth proportional to 39,342.14, 54,289.91 and 21,436.28 is: 29,580.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,342.14 : 54,289.91 = 21,436.28 : x
  2. Step 2: Convert to fraction form
    39,342.14/54,289.91 = 21,436.28/x
  3. Step 3: Cross multiply
    39,342.14x = 54,289.91 × 21,436.28
  4. Step 4: Simplify right side
    39,342.14x = 1,163,773,711.93
  5. Step 5: Solve for x
    x = 1,163,773,711.93/39,342.14
  6. Step 6: Final answer
    x = 29,580.84

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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.