Home / 31,289.64-43,179.93-17,142.72

Finding the Fourth Proportional to 31,289.64, 43,179.93 and 17,142.72

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Solution

The fourth proportional to 31,289.64, 43,179.93 and 17,142.72 is: 23,657.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,289.64 : 43,179.93 = 17,142.72 : x
  2. Step 2: Convert to fraction form
    31,289.64/43,179.93 = 17,142.72/x
  3. Step 3: Cross multiply
    31,289.64x = 43,179.93 × 17,142.72
  4. Step 4: Simplify right side
    31,289.64x = 740,221,449.61
  5. Step 5: Solve for x
    x = 740,221,449.61/31,289.64
  6. Step 6: Final answer
    x = 23,657.08

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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.