Home / 30,755.13-42,445.22-18,826.35

Finding the Fourth Proportional to 30,755.13, 42,445.22 and 18,826.35

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Solution

The fourth proportional to 30,755.13, 42,445.22 and 18,826.35 is: 25,982.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,755.13 : 42,445.22 = 18,826.35 : x
  2. Step 2: Convert to fraction form
    30,755.13/42,445.22 = 18,826.35/x
  3. Step 3: Cross multiply
    30,755.13x = 42,445.22 × 18,826.35
  4. Step 4: Simplify right side
    30,755.13x = 799,088,473.42
  5. Step 5: Solve for x
    x = 799,088,473.42/30,755.13
  6. Step 6: Final answer
    x = 25,982.28

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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.