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Finding the Fourth Proportional to 15,881.81, 23,822.91 and 7,114.91

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Solution

The fourth proportional to 15,881.81, 23,822.91 and 7,114.91 is: 10,672.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,881.81 : 23,822.91 = 7,114.91 : x
  2. Step 2: Convert to fraction form
    15,881.81/23,822.91 = 7,114.91/x
  3. Step 3: Cross multiply
    15,881.81x = 23,822.91 × 7,114.91
  4. Step 4: Simplify right side
    15,881.81x = 169,497,741.47
  5. Step 5: Solve for x
    x = 169,497,741.47/15,881.81
  6. Step 6: Final answer
    x = 10,672.45

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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.