Home / 31,064.38-42,883.43-18,313.56

Finding the Fourth Proportional to 31,064.38, 42,883.43 and 18,313.56

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Solution

The fourth proportional to 31,064.38, 42,883.43 and 18,313.56 is: 25,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,064.38 : 42,883.43 = 18,313.56 : x
  2. Step 2: Convert to fraction form
    31,064.38/42,883.43 = 18,313.56/x
  3. Step 3: Cross multiply
    31,064.38x = 42,883.43 × 18,313.56
  4. Step 4: Simplify right side
    31,064.38x = 785,348,176.74
  5. Step 5: Solve for x
    x = 785,348,176.74/31,064.38
  6. Step 6: Final answer
    x = 25,281.31

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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.