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Finding the Fourth Proportional to 10,398.57, 15,600.30 and 7,113.21

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Solution

The fourth proportional to 10,398.57, 15,600.30 and 7,113.21 is: 10,671.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,398.57 : 15,600.30 = 7,113.21 : x
  2. Step 2: Convert to fraction form
    10,398.57/15,600.30 = 7,113.21/x
  3. Step 3: Cross multiply
    10,398.57x = 15,600.30 × 7,113.21
  4. Step 4: Simplify right side
    10,398.57x = 110,968,209.96
  5. Step 5: Solve for x
    x = 110,968,209.96/10,398.57
  6. Step 6: Final answer
    x = 10,671.49

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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.