Home / 10,618.19-15,920.45-5,071.41

Finding the Fourth Proportional to 10,618.19, 15,920.45 and 5,071.41

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Solution

The fourth proportional to 10,618.19, 15,920.45 and 5,071.41 is: 7,603.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,618.19 : 15,920.45 = 5,071.41 : x
  2. Step 2: Convert to fraction form
    10,618.19/15,920.45 = 5,071.41/x
  3. Step 3: Cross multiply
    10,618.19x = 15,920.45 × 5,071.41
  4. Step 4: Simplify right side
    10,618.19x = 80,739,123.00
  5. Step 5: Solve for x
    x = 80,739,123.00/10,618.19
  6. Step 6: Final answer
    x = 7,603.85

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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.