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Finding the Fourth Proportional to 40,012.17, 60,018.21 and 12,310.17

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Solution

The fourth proportional to 40,012.17, 60,018.21 and 12,310.17 is: 18,465.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,012.17 : 60,018.21 = 12,310.17 : x
  2. Step 2: Convert to fraction form
    40,012.17/60,018.21 = 12,310.17/x
  3. Step 3: Cross multiply
    40,012.17x = 60,018.21 × 12,310.17
  4. Step 4: Simplify right side
    40,012.17x = 738,834,368.20
  5. Step 5: Solve for x
    x = 738,834,368.20/40,012.17
  6. Step 6: Final answer
    x = 18,465.24

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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.