Home / 31,559.28-43,548.12-18,985.20

Finding the Fourth Proportional to 31,559.28, 43,548.12 and 18,985.20

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Solution

The fourth proportional to 31,559.28, 43,548.12 and 18,985.20 is: 26,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,559.28 : 43,548.12 = 18,985.20 : x
  2. Step 2: Convert to fraction form
    31,559.28/43,548.12 = 18,985.20/x
  3. Step 3: Cross multiply
    31,559.28x = 43,548.12 × 18,985.20
  4. Step 4: Simplify right side
    31,559.28x = 826,769,767.82
  5. Step 5: Solve for x
    x = 826,769,767.82/31,559.28
  6. Step 6: Final answer
    x = 26,197.36

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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.