Home / 30,191.77-41,656.20-18,872.78

Finding the Fourth Proportional to 30,191.77, 41,656.20 and 18,872.78

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Solution

The fourth proportional to 30,191.77, 41,656.20 and 18,872.78 is: 26,039.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,191.77 : 41,656.20 = 18,872.78 : x
  2. Step 2: Convert to fraction form
    30,191.77/41,656.20 = 18,872.78/x
  3. Step 3: Cross multiply
    30,191.77x = 41,656.20 × 18,872.78
  4. Step 4: Simplify right side
    30,191.77x = 786,168,298.24
  5. Step 5: Solve for x
    x = 786,168,298.24/30,191.77
  6. Step 6: Final answer
    x = 26,039.16

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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.