Home / 20,590,218.20-28,402,695.68-12,841,808.42

Finding the Fourth Proportional to 20,590,218.20, 28,402,695.68 and 12,841,808.42

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Solution

The fourth proportional to 20,590,218.20, 28,402,695.68 and 12,841,808.42 is: 17,714,332.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590,218.20 : 28,402,695.68 = 12,841,808.42 : x
  2. Step 2: Convert to fraction form
    20,590,218.20/28,402,695.68 = 12,841,808.42/x
  3. Step 3: Cross multiply
    20,590,218.20x = 28,402,695.68 × 12,841,808.42
  4. Step 4: Simplify right side
    20,590,218.20x = 364,741,976,534,121.62
  5. Step 5: Solve for x
    x = 364,741,976,534,121.62/20,590,218.20
  6. Step 6: Final answer
    x = 17,714,332.75

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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.