Home / 28,259.60-42,389.88-12,247.76

Finding the Fourth Proportional to 28,259.60, 42,389.88 and 12,247.76

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Solution

The fourth proportional to 28,259.60, 42,389.88 and 12,247.76 is: 18,371.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,259.60 : 42,389.88 = 12,247.76 : x
  2. Step 2: Convert to fraction form
    28,259.60/42,389.88 = 12,247.76/x
  3. Step 3: Cross multiply
    28,259.60x = 42,389.88 × 12,247.76
  4. Step 4: Simplify right side
    28,259.60x = 519,181,076.67
  5. Step 5: Solve for x
    x = 519,181,076.67/28,259.60
  6. Step 6: Final answer
    x = 18,371.85

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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.