Home / 13,608,521.20-20,412,781.80-11,215,068.40

Finding the Fourth Proportional to 13,608,521.20, 20,412,781.80 and 11,215,068.40

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Solution

The fourth proportional to 13,608,521.20, 20,412,781.80 and 11,215,068.40 is: 16,822,602.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,521.20 : 20,412,781.80 = 11,215,068.40 : x
  2. Step 2: Convert to fraction form
    13,608,521.20/20,412,781.80 = 11,215,068.40/x
  3. Step 3: Cross multiply
    13,608,521.20x = 20,412,781.80 × 11,215,068.40
  4. Step 4: Simplify right side
    13,608,521.20x = 228,930,744,121,275.12
  5. Step 5: Solve for x
    x = 228,930,744,121,275.12/13,608,521.20
  6. Step 6: Final answer
    x = 16,822,602.60

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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.