Home / 25,981.52-38,981.36-8,214.92

Finding the Fourth Proportional to 25,981.52, 38,981.36 and 8,214.92

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Solution

The fourth proportional to 25,981.52, 38,981.36 and 8,214.92 is: 12,325.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.52 : 38,981.36 = 8,214.92 : x
  2. Step 2: Convert to fraction form
    25,981.52/38,981.36 = 8,214.92/x
  3. Step 3: Cross multiply
    25,981.52x = 38,981.36 × 8,214.92
  4. Step 4: Simplify right side
    25,981.52x = 320,228,753.89
  5. Step 5: Solve for x
    x = 320,228,753.89/25,981.52
  6. Step 6: Final answer
    x = 12,325.25

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1.5x scale

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.