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Finding the Fourth Proportional to 10,393.57, 15,592.79 and 7,108.21

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Solution

The fourth proportional to 10,393.57, 15,592.79 and 7,108.21 is: 10,663.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,393.57 : 15,592.79 = 7,108.21 : x
  2. Step 2: Convert to fraction form
    10,393.57/15,592.79 = 7,108.21/x
  3. Step 3: Cross multiply
    10,393.57x = 15,592.79 × 7,108.21
  4. Step 4: Simplify right side
    10,393.57x = 110,836,825.81
  5. Step 5: Solve for x
    x = 110,836,825.81/10,393.57
  6. Step 6: Final answer
    x = 10,663.98

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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.