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Finding the Fourth Proportional to 27,319.18, 40,978.90 and 8,598.46

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Solution

The fourth proportional to 27,319.18, 40,978.90 and 8,598.46 is: 12,897.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,319.18 : 40,978.90 = 8,598.46 : x
  2. Step 2: Convert to fraction form
    27,319.18/40,978.90 = 8,598.46/x
  3. Step 3: Cross multiply
    27,319.18x = 40,978.90 × 8,598.46
  4. Step 4: Simplify right side
    27,319.18x = 352,355,432.49
  5. Step 5: Solve for x
    x = 352,355,432.49/27,319.18
  6. Step 6: Final answer
    x = 12,897.73

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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.