Home / 25,461.28-38,150.88-13,780

Finding the Fourth Proportional to 25,461.28, 38,150.88 and 13,780

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Solution

The fourth proportional to 25,461.28, 38,150.88 and 13,780 is: 20,647.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,461.28 : 38,150.88 = 13,780 : x
  2. Step 2: Convert to fraction form
    25,461.28/38,150.88 = 13,780/x
  3. Step 3: Cross multiply
    25,461.28x = 38,150.88 × 13,780
  4. Step 4: Simplify right side
    25,461.28x = 525,719,126.40
  5. Step 5: Solve for x
    x = 525,719,126.40/25,461.28
  6. Step 6: Final answer
    x = 20,647.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.