Home / 31,278.19-43,164.62-17,130.91

Finding the Fourth Proportional to 31,278.19, 43,164.62 and 17,130.91

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Solution

The fourth proportional to 31,278.19, 43,164.62 and 17,130.91 is: 23,641.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.19 : 43,164.62 = 17,130.91 : x
  2. Step 2: Convert to fraction form
    31,278.19/43,164.62 = 17,130.91/x
  3. Step 3: Cross multiply
    31,278.19x = 43,164.62 × 17,130.91
  4. Step 4: Simplify right side
    31,278.19x = 739,449,220.40
  5. Step 5: Solve for x
    x = 739,449,220.40/31,278.19
  6. Step 6: Final answer
    x = 23,641.05

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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.