Home / 28,519.47-42,805.71-14,489.46

Finding the Fourth Proportional to 28,519.47, 42,805.71 and 14,489.46

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Solution

The fourth proportional to 28,519.47, 42,805.71 and 14,489.46 is: 21,747.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.47 : 42,805.71 = 14,489.46 : x
  2. Step 2: Convert to fraction form
    28,519.47/42,805.71 = 14,489.46/x
  3. Step 3: Cross multiply
    28,519.47x = 42,805.71 × 14,489.46
  4. Step 4: Simplify right side
    28,519.47x = 620,231,622.82
  5. Step 5: Solve for x
    x = 620,231,622.82/28,519.47
  6. Step 6: Final answer
    x = 21,747.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.