Home / 10,587.43-15,890.66-5,661.28

Finding the Fourth Proportional to 10,587.43, 15,890.66 and 5,661.28

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Solution

The fourth proportional to 10,587.43, 15,890.66 and 5,661.28 is: 8,497.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,587.43 : 15,890.66 = 5,661.28 : x
  2. Step 2: Convert to fraction form
    10,587.43/15,890.66 = 5,661.28/x
  3. Step 3: Cross multiply
    10,587.43x = 15,890.66 × 5,661.28
  4. Step 4: Simplify right side
    10,587.43x = 89,961,475.64
  5. Step 5: Solve for x
    x = 89,961,475.64/10,587.43
  6. Step 6: Final answer
    x = 8,497.01

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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.