Home / 21,218,864.32-31,764,854.72-12,995,612.44

Finding the Fourth Proportional to 21,218,864.32, 31,764,854.72 and 12,995,612.44

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Solution

The fourth proportional to 21,218,864.32, 31,764,854.72 and 12,995,612.44 is: 19,454,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218,864.32 : 31,764,854.72 = 12,995,612.44 : x
  2. Step 2: Convert to fraction form
    21,218,864.32/31,764,854.72 = 12,995,612.44/x
  3. Step 3: Cross multiply
    21,218,864.32x = 31,764,854.72 × 12,995,612.44
  4. Step 4: Simplify right side
    21,218,864.32x = 412,803,741,154,024.69
  5. Step 5: Solve for x
    x = 412,803,741,154,024.69/21,218,864.32
  6. Step 6: Final answer
    x = 19,454,563.40

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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.