Home / 31,397.50-43,309.32-18,642.02

Finding the Fourth Proportional to 31,397.50, 43,309.32 and 18,642.02

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Solution

The fourth proportional to 31,397.50, 43,309.32 and 18,642.02 is: 25,714.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,397.50 : 43,309.32 = 18,642.02 : x
  2. Step 2: Convert to fraction form
    31,397.50/43,309.32 = 18,642.02/x
  3. Step 3: Cross multiply
    31,397.50x = 43,309.32 × 18,642.02
  4. Step 4: Simplify right side
    31,397.50x = 807,373,209.63
  5. Step 5: Solve for x
    x = 807,373,209.63/31,397.50
  6. Step 6: Final answer
    x = 25,714.57

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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.