Home / 31,655.05-43,701.47-21,060.25

Finding the Fourth Proportional to 31,655.05, 43,701.47 and 21,060.25

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Solution

The fourth proportional to 31,655.05, 43,701.47 and 21,060.25 is: 29,074.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,655.05 : 43,701.47 = 21,060.25 : x
  2. Step 2: Convert to fraction form
    31,655.05/43,701.47 = 21,060.25/x
  3. Step 3: Cross multiply
    31,655.05x = 43,701.47 × 21,060.25
  4. Step 4: Simplify right side
    31,655.05x = 920,363,778.27
  5. Step 5: Solve for x
    x = 920,363,778.27/31,655.05
  6. Step 6: Final answer
    x = 29,074.79

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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.