Home / 34,072.60-47,009.22-20,639.56

Finding the Fourth Proportional to 34,072.60, 47,009.22 and 20,639.56

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Solution

The fourth proportional to 34,072.60, 47,009.22 and 20,639.56 is: 28,475.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,072.60 : 47,009.22 = 20,639.56 : x
  2. Step 2: Convert to fraction form
    34,072.60/47,009.22 = 20,639.56/x
  3. Step 3: Cross multiply
    34,072.60x = 47,009.22 × 20,639.56
  4. Step 4: Simplify right side
    34,072.60x = 970,249,616.74
  5. Step 5: Solve for x
    x = 970,249,616.74/34,072.60
  6. Step 6: Final answer
    x = 28,475.95

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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.