Home / 10,920.06-16,368.40-5,649.76

Finding the Fourth Proportional to 10,920.06, 16,368.40 and 5,649.76

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Solution

The fourth proportional to 10,920.06, 16,368.40 and 5,649.76 is: 8,468.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.06 : 16,368.40 = 5,649.76 : x
  2. Step 2: Convert to fraction form
    10,920.06/16,368.40 = 5,649.76/x
  3. Step 3: Cross multiply
    10,920.06x = 16,368.40 × 5,649.76
  4. Step 4: Simplify right side
    10,920.06x = 92,477,531.58
  5. Step 5: Solve for x
    x = 92,477,531.58/10,920.06
  6. Step 6: Final answer
    x = 8,468.59

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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.