Home / 31,110.70-42,932.73-18,363.90

Finding the Fourth Proportional to 31,110.70, 42,932.73 and 18,363.90

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Solution

The fourth proportional to 31,110.70, 42,932.73 and 18,363.90 is: 25,342.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,110.70 : 42,932.73 = 18,363.90 : x
  2. Step 2: Convert to fraction form
    31,110.70/42,932.73 = 18,363.90/x
  3. Step 3: Cross multiply
    31,110.70x = 42,932.73 × 18,363.90
  4. Step 4: Simplify right side
    31,110.70x = 788,412,360.45
  5. Step 5: Solve for x
    x = 788,412,360.45/31,110.70
  6. Step 6: Final answer
    x = 25,342.16

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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.