Home / 39,778.60-59,628.47-18,680.87

Finding the Fourth Proportional to 39,778.60, 59,628.47 and 18,680.87

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Solution

The fourth proportional to 39,778.60, 59,628.47 and 18,680.87 is: 28,002.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,778.60 : 59,628.47 = 18,680.87 : x
  2. Step 2: Convert to fraction form
    39,778.60/59,628.47 = 18,680.87/x
  3. Step 3: Cross multiply
    39,778.60x = 59,628.47 × 18,680.87
  4. Step 4: Simplify right side
    39,778.60x = 1,113,911,696.37
  5. Step 5: Solve for x
    x = 1,113,911,696.37/39,778.60
  6. Step 6: Final answer
    x = 28,002.79

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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.