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Finding the Fourth Proportional to 12,612.87, 18,985.07 and 10,710.18

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Solution

The fourth proportional to 12,612.87, 18,985.07 and 10,710.18 is: 16,121.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.87 : 18,985.07 = 10,710.18 : x
  2. Step 2: Convert to fraction form
    12,612.87/18,985.07 = 10,710.18/x
  3. Step 3: Cross multiply
    12,612.87x = 18,985.07 × 10,710.18
  4. Step 4: Simplify right side
    12,612.87x = 203,333,543.79
  5. Step 5: Solve for x
    x = 203,333,543.79/12,612.87
  6. Step 6: Final answer
    x = 16,121.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.