Home / 18,720,267.20-28,080,400.80-10,217,211.20

Finding the Fourth Proportional to 18,720,267.20, 28,080,400.80 and 10,217,211.20

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Solution

The fourth proportional to 18,720,267.20, 28,080,400.80 and 10,217,211.20 is: 15,325,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720,267.20 : 28,080,400.80 = 10,217,211.20 : x
  2. Step 2: Convert to fraction form
    18,720,267.20/28,080,400.80 = 10,217,211.20/x
  3. Step 3: Cross multiply
    18,720,267.20x = 28,080,400.80 × 10,217,211.20
  4. Step 4: Simplify right side
    18,720,267.20x = 286,903,385,554,248.94
  5. Step 5: Solve for x
    x = 286,903,385,554,248.94/18,720,267.20
  6. Step 6: Final answer
    x = 15,325,816.80

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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.