Home / 20,236,318.80-27,918,275.52-12,892,836.72

Finding the Fourth Proportional to 20,236,318.80, 27,918,275.52 and 12,892,836.72

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Solution

The fourth proportional to 20,236,318.80, 27,918,275.52 and 12,892,836.72 is: 17,787,116.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,236,318.80 : 27,918,275.52 = 12,892,836.72 : x
  2. Step 2: Convert to fraction form
    20,236,318.80/27,918,275.52 = 12,892,836.72/x
  3. Step 3: Cross multiply
    20,236,318.80x = 27,918,275.52 × 12,892,836.72
  4. Step 4: Simplify right side
    20,236,318.80x = 359,945,767,783,333.12
  5. Step 5: Solve for x
    x = 359,945,767,783,333.12/20,236,318.80
  6. Step 6: Final answer
    x = 17,787,116.88

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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.