Home / 20,246,621.20-30,369,931.80-18,687,727.60

Finding the Fourth Proportional to 20,246,621.20, 30,369,931.80 and 18,687,727.60

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Solution

The fourth proportional to 20,246,621.20, 30,369,931.80 and 18,687,727.60 is: 28,031,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246,621.20 : 30,369,931.80 = 18,687,727.60 : x
  2. Step 2: Convert to fraction form
    20,246,621.20/30,369,931.80 = 18,687,727.60/x
  3. Step 3: Cross multiply
    20,246,621.20x = 30,369,931.80 × 18,687,727.60
  4. Step 4: Simplify right side
    20,246,621.20x = 567,545,012,708,977.75
  5. Step 5: Solve for x
    x = 567,545,012,708,977.75/20,246,621.20
  6. Step 6: Final answer
    x = 28,031,591.40

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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.