Home / 12,506,731.80-18,746,100.90-7,117,963.80

Finding the Fourth Proportional to 12,506,731.80, 18,746,100.90 and 7,117,963.80

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Solution

The fourth proportional to 12,506,731.80, 18,746,100.90 and 7,117,963.80 is: 10,668,979.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,506,731.80 : 18,746,100.90 = 7,117,963.80 : x
  2. Step 2: Convert to fraction form
    12,506,731.80/18,746,100.90 = 7,117,963.80/x
  3. Step 3: Cross multiply
    12,506,731.80x = 18,746,100.90 × 7,117,963.80
  4. Step 4: Simplify right side
    12,506,731.80x = 133,434,067,597,347.41
  5. Step 5: Solve for x
    x = 133,434,067,597,347.41/12,506,731.80
  6. Step 6: Final answer
    x = 10,668,979.69

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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.