Home / 20,406,023.68-28,158,228.84-12,564,290.56

Finding the Fourth Proportional to 20,406,023.68, 28,158,228.84 and 12,564,290.56

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Solution

The fourth proportional to 20,406,023.68, 28,158,228.84 and 12,564,290.56 is: 17,337,437.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406,023.68 : 28,158,228.84 = 12,564,290.56 : x
  2. Step 2: Convert to fraction form
    20,406,023.68/28,158,228.84 = 12,564,290.56/x
  3. Step 3: Cross multiply
    20,406,023.68x = 28,158,228.84 × 12,564,290.56
  4. Step 4: Simplify right side
    20,406,023.68x = 353,788,168,800,731.75
  5. Step 5: Solve for x
    x = 353,788,168,800,731.75/20,406,023.68
  6. Step 6: Final answer
    x = 17,337,437.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.