Home / 10,386.92-15,572.55-5,383.91

Finding the Fourth Proportional to 10,386.92, 15,572.55 and 5,383.91

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Solution

The fourth proportional to 10,386.92, 15,572.55 and 5,383.91 is: 8,071.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,386.92 : 15,572.55 = 5,383.91 : x
  2. Step 2: Convert to fraction form
    10,386.92/15,572.55 = 5,383.91/x
  3. Step 3: Cross multiply
    10,386.92x = 15,572.55 × 5,383.91
  4. Step 4: Simplify right side
    10,386.92x = 83,841,207.67
  5. Step 5: Solve for x
    x = 83,841,207.67/10,386.92
  6. Step 6: Final answer
    x = 8,071.81

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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.