Home / 16,901.60-25,330.80-12,279.20

Finding the Fourth Proportional to 16,901.60, 25,330.80 and 12,279.20

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Solution

The fourth proportional to 16,901.60, 25,330.80 and 12,279.20 is: 18,403.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,901.60 : 25,330.80 = 12,279.20 : x
  2. Step 2: Convert to fraction form
    16,901.60/25,330.80 = 12,279.20/x
  3. Step 3: Cross multiply
    16,901.60x = 25,330.80 × 12,279.20
  4. Step 4: Simplify right side
    16,901.60x = 311,041,959.36
  5. Step 5: Solve for x
    x = 311,041,959.36/16,901.60
  6. Step 6: Final answer
    x = 18,403.11

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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.