Home / 38,990.52-53,807.36-21,085.88

Finding the Fourth Proportional to 38,990.52, 53,807.36 and 21,085.88

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Solution

The fourth proportional to 38,990.52, 53,807.36 and 21,085.88 is: 29,098.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.52 : 53,807.36 = 21,085.88 : x
  2. Step 2: Convert to fraction form
    38,990.52/53,807.36 = 21,085.88/x
  3. Step 3: Cross multiply
    38,990.52x = 53,807.36 × 21,085.88
  4. Step 4: Simplify right side
    38,990.52x = 1,134,575,536.08
  5. Step 5: Solve for x
    x = 1,134,575,536.08/38,990.52
  6. Step 6: Final answer
    x = 29,098.75

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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.