Home / 39,723.83-54,818.75-21,819.95

Finding the Fourth Proportional to 39,723.83, 54,818.75 and 21,819.95

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Solution

The fourth proportional to 39,723.83, 54,818.75 and 21,819.95 is: 30,111.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.83 : 54,818.75 = 21,819.95 : x
  2. Step 2: Convert to fraction form
    39,723.83/54,818.75 = 21,819.95/x
  3. Step 3: Cross multiply
    39,723.83x = 54,818.75 × 21,819.95
  4. Step 4: Simplify right side
    39,723.83x = 1,196,142,164.52
  5. Step 5: Solve for x
    x = 1,196,142,164.52/39,723.83
  6. Step 6: Final answer
    x = 30,111.45

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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.