Home / 10,398.18-15,594.84-5,127.78

Finding the Fourth Proportional to 10,398.18, 15,594.84 and 5,127.78

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Solution

The fourth proportional to 10,398.18, 15,594.84 and 5,127.78 is: 7,690.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,398.18 : 15,594.84 = 5,127.78 : x
  2. Step 2: Convert to fraction form
    10,398.18/15,594.84 = 5,127.78/x
  3. Step 3: Cross multiply
    10,398.18x = 15,594.84 × 5,127.78
  4. Step 4: Simplify right side
    10,398.18x = 79,966,908.66
  5. Step 5: Solve for x
    x = 79,966,908.66/10,398.18
  6. Step 6: Final answer
    x = 7,690.47

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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.