Home / 39,381.08-54,349.12-22,390.66

Finding the Fourth Proportional to 39,381.08, 54,349.12 and 22,390.66

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Solution

The fourth proportional to 39,381.08, 54,349.12 and 22,390.66 is: 30,900.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,381.08 : 54,349.12 = 22,390.66 : x
  2. Step 2: Convert to fraction form
    39,381.08/54,349.12 = 22,390.66/x
  3. Step 3: Cross multiply
    39,381.08x = 54,349.12 × 22,390.66
  4. Step 4: Simplify right side
    39,381.08x = 1,216,912,394.46
  5. Step 5: Solve for x
    x = 1,216,912,394.46/39,381.08
  6. Step 6: Final answer
    x = 30,900.94

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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.