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Finding the Fourth Proportional to 29,679.15, 40,984.98 and 19,087.17

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Solution

The fourth proportional to 29,679.15, 40,984.98 and 19,087.17 is: 26,358.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,679.15 : 40,984.98 = 19,087.17 : x
  2. Step 2: Convert to fraction form
    29,679.15/40,984.98 = 19,087.17/x
  3. Step 3: Cross multiply
    29,679.15x = 40,984.98 × 19,087.17
  4. Step 4: Simplify right side
    29,679.15x = 782,287,280.71
  5. Step 5: Solve for x
    x = 782,287,280.71/29,679.15
  6. Step 6: Final answer
    x = 26,358.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.