Home / 31,575.28-43,589.65-19,642.49

Finding the Fourth Proportional to 31,575.28, 43,589.65 and 19,642.49

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Solution

The fourth proportional to 31,575.28, 43,589.65 and 19,642.49 is: 27,116.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,575.28 : 43,589.65 = 19,642.49 : x
  2. Step 2: Convert to fraction form
    31,575.28/43,589.65 = 19,642.49/x
  3. Step 3: Cross multiply
    31,575.28x = 43,589.65 × 19,642.49
  4. Step 4: Simplify right side
    31,575.28x = 856,209,264.23
  5. Step 5: Solve for x
    x = 856,209,264.23/31,575.28
  6. Step 6: Final answer
    x = 27,116.45

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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.