Home / 31,259.64-43,139.40-17,113.80

Finding the Fourth Proportional to 31,259.64, 43,139.40 and 17,113.80

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Solution

The fourth proportional to 31,259.64, 43,139.40 and 17,113.80 is: 23,617.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,259.64 : 43,139.40 = 17,113.80 : x
  2. Step 2: Convert to fraction form
    31,259.64/43,139.40 = 17,113.80/x
  3. Step 3: Cross multiply
    31,259.64x = 43,139.40 × 17,113.80
  4. Step 4: Simplify right side
    31,259.64x = 738,279,063.72
  5. Step 5: Solve for x
    x = 738,279,063.72/31,259.64
  6. Step 6: Final answer
    x = 23,617.64

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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.