Home / 38,511.53-53,142.50-21,513.47

Finding the Fourth Proportional to 38,511.53, 53,142.50 and 21,513.47

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Solution

The fourth proportional to 38,511.53, 53,142.50 and 21,513.47 is: 29,686.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,511.53 : 53,142.50 = 21,513.47 : x
  2. Step 2: Convert to fraction form
    38,511.53/53,142.50 = 21,513.47/x
  3. Step 3: Cross multiply
    38,511.53x = 53,142.50 × 21,513.47
  4. Step 4: Simplify right side
    38,511.53x = 1,143,279,766.11
  5. Step 5: Solve for x
    x = 1,143,279,766.11/38,511.53
  6. Step 6: Final answer
    x = 29,686.69

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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.