Home / 37,782-52,139.28-21,015.12

Finding the Fourth Proportional to 37,782, 52,139.28 and 21,015.12

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Solution

The fourth proportional to 37,782, 52,139.28 and 21,015.12 is: 29,000.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,782 : 52,139.28 = 21,015.12 : x
  2. Step 2: Convert to fraction form
    37,782/52,139.28 = 21,015.12/x
  3. Step 3: Cross multiply
    37,782x = 52,139.28 × 21,015.12
  4. Step 4: Simplify right side
    37,782x = 1,095,713,225.91
  5. Step 5: Solve for x
    x = 1,095,713,225.91/37,782
  6. Step 6: Final answer
    x = 29,000.93

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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.