Home / 38,511.65-53,145.48-21,516.13

Finding the Fourth Proportional to 38,511.65, 53,145.48 and 21,516.13

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Solution

The fourth proportional to 38,511.65, 53,145.48 and 21,516.13 is: 29,691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,511.65 : 53,145.48 = 21,516.13 : x
  2. Step 2: Convert to fraction form
    38,511.65/53,145.48 = 21,516.13/x
  3. Step 3: Cross multiply
    38,511.65x = 53,145.48 × 21,516.13
  4. Step 4: Simplify right side
    38,511.65x = 1,143,484,816.15
  5. Step 5: Solve for x
    x = 1,143,484,816.15/38,511.65
  6. Step 6: Final answer
    x = 29,691.92

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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.