Home / 25,990.14-38,981.16-8,459.86

Finding the Fourth Proportional to 25,990.14, 38,981.16 and 8,459.86

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Solution

The fourth proportional to 25,990.14, 38,981.16 and 8,459.86 is: 12,688.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.14 : 38,981.16 = 8,459.86 : x
  2. Step 2: Convert to fraction form
    25,990.14/38,981.16 = 8,459.86/x
  3. Step 3: Cross multiply
    25,990.14x = 38,981.16 × 8,459.86
  4. Step 4: Simplify right side
    25,990.14x = 329,775,156.24
  5. Step 5: Solve for x
    x = 329,775,156.24/25,990.14
  6. Step 6: Final answer
    x = 12,688.47

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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.