Home / 34,066.21-47,012.39-20,639.92

Finding the Fourth Proportional to 34,066.21, 47,012.39 and 20,639.92

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Solution

The fourth proportional to 34,066.21, 47,012.39 and 20,639.92 is: 28,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,066.21 : 47,012.39 = 20,639.92 : x
  2. Step 2: Convert to fraction form
    34,066.21/47,012.39 = 20,639.92/x
  3. Step 3: Cross multiply
    34,066.21x = 47,012.39 × 20,639.92
  4. Step 4: Simplify right side
    34,066.21x = 970,331,865.41
  5. Step 5: Solve for x
    x = 970,331,865.41/34,066.21
  6. Step 6: Final answer
    x = 28,483.70

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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.