Home / 12,960,886.40-19,431,998.40-7,282,851.20

Finding the Fourth Proportional to 12,960,886.40, 19,431,998.40 and 7,282,851.20

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Solution

The fourth proportional to 12,960,886.40, 19,431,998.40 and 7,282,851.20 is: 10,919,033.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,960,886.40 : 19,431,998.40 = 7,282,851.20 : x
  2. Step 2: Convert to fraction form
    12,960,886.40/19,431,998.40 = 7,282,851.20/x
  3. Step 3: Cross multiply
    12,960,886.40x = 19,431,998.40 × 7,282,851.20
  4. Step 4: Simplify right side
    12,960,886.40x = 141,520,352,865,838.06
  5. Step 5: Solve for x
    x = 141,520,352,865,838.06/12,960,886.40
  6. Step 6: Final answer
    x = 10,919,033.51

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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.