Home / 25,387.84-38,088-20,501.76

Finding the Fourth Proportional to 25,387.84, 38,088 and 20,501.76

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Solution

The fourth proportional to 25,387.84, 38,088 and 20,501.76 is: 30,757.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,387.84 : 38,088 = 20,501.76 : x
  2. Step 2: Convert to fraction form
    25,387.84/38,088 = 20,501.76/x
  3. Step 3: Cross multiply
    25,387.84x = 38,088 × 20,501.76
  4. Step 4: Simplify right side
    25,387.84x = 780,871,034.88
  5. Step 5: Solve for x
    x = 780,871,034.88/25,387.84
  6. Step 6: Final answer
    x = 30,757.68

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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.