Home / 31,577.61-43,578.90-18,827.40

Finding the Fourth Proportional to 31,577.61, 43,578.90 and 18,827.40

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Solution

The fourth proportional to 31,577.61, 43,578.90 and 18,827.40 is: 25,982.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,577.61 : 43,578.90 = 18,827.40 : x
  2. Step 2: Convert to fraction form
    31,577.61/43,578.90 = 18,827.40/x
  3. Step 3: Cross multiply
    31,577.61x = 43,578.90 × 18,827.40
  4. Step 4: Simplify right side
    31,577.61x = 820,477,381.86
  5. Step 5: Solve for x
    x = 820,477,381.86/31,577.61
  6. Step 6: Final answer
    x = 25,982.88

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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.