Home / 31,102.39-42,921.20-16,955.24

Finding the Fourth Proportional to 31,102.39, 42,921.20 and 16,955.24

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Solution

The fourth proportional to 31,102.39, 42,921.20 and 16,955.24 is: 23,398.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,102.39 : 42,921.20 = 16,955.24 : x
  2. Step 2: Convert to fraction form
    31,102.39/42,921.20 = 16,955.24/x
  3. Step 3: Cross multiply
    31,102.39x = 42,921.20 × 16,955.24
  4. Step 4: Simplify right side
    31,102.39x = 727,739,074.87
  5. Step 5: Solve for x
    x = 727,739,074.87/31,102.39
  6. Step 6: Final answer
    x = 23,398.17

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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.