Home / 28,439.70-39,246.52-15,693

Finding the Fourth Proportional to 28,439.70, 39,246.52 and 15,693

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Solution

The fourth proportional to 28,439.70, 39,246.52 and 15,693 is: 21,656.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.70 : 39,246.52 = 15,693 : x
  2. Step 2: Convert to fraction form
    28,439.70/39,246.52 = 15,693/x
  3. Step 3: Cross multiply
    28,439.70x = 39,246.52 × 15,693
  4. Step 4: Simplify right side
    28,439.70x = 615,895,638.36
  5. Step 5: Solve for x
    x = 615,895,638.36/28,439.70
  6. Step 6: Final answer
    x = 21,656.19

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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.