Home / 39,384.72-54,350.22-21,479.76

Finding the Fourth Proportional to 39,384.72, 54,350.22 and 21,479.76

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Solution

The fourth proportional to 39,384.72, 54,350.22 and 21,479.76 is: 29,641.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,384.72 : 54,350.22 = 21,479.76 : x
  2. Step 2: Convert to fraction form
    39,384.72/54,350.22 = 21,479.76/x
  3. Step 3: Cross multiply
    39,384.72x = 54,350.22 × 21,479.76
  4. Step 4: Simplify right side
    39,384.72x = 1,167,429,681.55
  5. Step 5: Solve for x
    x = 1,167,429,681.55/39,384.72
  6. Step 6: Final answer
    x = 29,641.69

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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.