Home / 20,486,279.40-30,729,419.10-10,282,612.20

Finding the Fourth Proportional to 20,486,279.40, 30,729,419.10 and 10,282,612.20

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Solution

The fourth proportional to 20,486,279.40, 30,729,419.10 and 10,282,612.20 is: 15,423,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486,279.40 : 30,729,419.10 = 10,282,612.20 : x
  2. Step 2: Convert to fraction form
    20,486,279.40/30,729,419.10 = 10,282,612.20/x
  3. Step 3: Cross multiply
    20,486,279.40x = 30,729,419.10 × 10,282,612.20
  4. Step 4: Simplify right side
    20,486,279.40x = 315,978,699,736,573
  5. Step 5: Solve for x
    x = 315,978,699,736,573/20,486,279.40
  6. Step 6: Final answer
    x = 15,423,918.30

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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.