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Finding the Fourth Proportional to 29,492.75, 40,643.16 and 18,863.93

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Solution

The fourth proportional to 29,492.75, 40,643.16 and 18,863.93 is: 25,995.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,492.75 : 40,643.16 = 18,863.93 : x
  2. Step 2: Convert to fraction form
    29,492.75/40,643.16 = 18,863.93/x
  3. Step 3: Cross multiply
    29,492.75x = 40,643.16 × 18,863.93
  4. Step 4: Simplify right side
    29,492.75x = 766,689,725.22
  5. Step 5: Solve for x
    x = 766,689,725.22/29,492.75
  6. Step 6: Final answer
    x = 25,995.87

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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.