Home / 28,139.68-38,828.16-15,562

Finding the Fourth Proportional to 28,139.68, 38,828.16 and 15,562

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Solution

The fourth proportional to 28,139.68, 38,828.16 and 15,562 is: 21,473.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.68 : 38,828.16 = 15,562 : x
  2. Step 2: Convert to fraction form
    28,139.68/38,828.16 = 15,562/x
  3. Step 3: Cross multiply
    28,139.68x = 38,828.16 × 15,562
  4. Step 4: Simplify right side
    28,139.68x = 604,243,825.92
  5. Step 5: Solve for x
    x = 604,243,825.92/28,139.68
  6. Step 6: Final answer
    x = 21,473.02

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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.