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Finding the Fourth Proportional to 29,312.40, 40,451.05 and 15,884.02

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Solution

The fourth proportional to 29,312.40, 40,451.05 and 15,884.02 is: 21,919.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,312.40 : 40,451.05 = 15,884.02 : x
  2. Step 2: Convert to fraction form
    29,312.40/40,451.05 = 15,884.02/x
  3. Step 3: Cross multiply
    29,312.40x = 40,451.05 × 15,884.02
  4. Step 4: Simplify right side
    29,312.40x = 642,525,357.64
  5. Step 5: Solve for x
    x = 642,525,357.64/29,312.40
  6. Step 6: Final answer
    x = 21,919.91

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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.