Home / 10,929.90-15,083.22-6,454.68

Finding the Fourth Proportional to 10,929.90, 15,083.22 and 6,454.68

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Solution

The fourth proportional to 10,929.90, 15,083.22 and 6,454.68 is: 8,907.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.90 : 15,083.22 = 6,454.68 : x
  2. Step 2: Convert to fraction form
    10,929.90/15,083.22 = 6,454.68/x
  3. Step 3: Cross multiply
    10,929.90x = 15,083.22 × 6,454.68
  4. Step 4: Simplify right side
    10,929.90x = 97,357,358.47
  5. Step 5: Solve for x
    x = 97,357,358.47/10,929.90
  6. Step 6: Final answer
    x = 8,907.43

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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.