Home / 39,389.76-54,357.12-21,484.80

Finding the Fourth Proportional to 39,389.76, 54,357.12 and 21,484.80

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Solution

The fourth proportional to 39,389.76, 54,357.12 and 21,484.80 is: 29,648.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,389.76 : 54,357.12 = 21,484.80 : x
  2. Step 2: Convert to fraction form
    39,389.76/54,357.12 = 21,484.80/x
  3. Step 3: Cross multiply
    39,389.76x = 54,357.12 × 21,484.80
  4. Step 4: Simplify right side
    39,389.76x = 1,167,851,851.78
  5. Step 5: Solve for x
    x = 1,167,851,851.78/39,389.76
  6. Step 6: Final answer
    x = 29,648.62

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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.