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Finding the Fourth Proportional to 9,721.13, 14,587.11 and 7,395.62

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Solution

The fourth proportional to 9,721.13, 14,587.11 and 7,395.62 is: 11,097.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.13 : 14,587.11 = 7,395.62 : x
  2. Step 2: Convert to fraction form
    9,721.13/14,587.11 = 7,395.62/x
  3. Step 3: Cross multiply
    9,721.13x = 14,587.11 × 7,395.62
  4. Step 4: Simplify right side
    9,721.13x = 107,880,649.52
  5. Step 5: Solve for x
    x = 107,880,649.52/9,721.13
  6. Step 6: Final answer
    x = 11,097.55

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1.5x scale

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.