Home / 19,723,613.20-29,585,419.80-12,921,168.40

Finding the Fourth Proportional to 19,723,613.20, 29,585,419.80 and 12,921,168.40

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Solution

The fourth proportional to 19,723,613.20, 29,585,419.80 and 12,921,168.40 is: 19,381,752.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,723,613.20 : 29,585,419.80 = 12,921,168.40 : x
  2. Step 2: Convert to fraction form
    19,723,613.20/29,585,419.80 = 12,921,168.40/x
  3. Step 3: Cross multiply
    19,723,613.20x = 29,585,419.80 × 12,921,168.40
  4. Step 4: Simplify right side
    19,723,613.20x = 382,278,191,420,494.31
  5. Step 5: Solve for x
    x = 382,278,191,420,494.31/19,723,613.20
  6. Step 6: Final answer
    x = 19,381,752.60

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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.