Home / 12,288,004.20-18,432,006.30-11,242,909.80

Finding the Fourth Proportional to 12,288,004.20, 18,432,006.30 and 11,242,909.80

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Solution

The fourth proportional to 12,288,004.20, 18,432,006.30 and 11,242,909.80 is: 16,864,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288,004.20 : 18,432,006.30 = 11,242,909.80 : x
  2. Step 2: Convert to fraction form
    12,288,004.20/18,432,006.30 = 11,242,909.80/x
  3. Step 3: Cross multiply
    12,288,004.20x = 18,432,006.30 × 11,242,909.80
  4. Step 4: Simplify right side
    12,288,004.20x = 207,229,384,263,931.75
  5. Step 5: Solve for x
    x = 207,229,384,263,931.75/12,288,004.20
  6. Step 6: Final answer
    x = 16,864,364.70

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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.