Home / 34,159.86-47,135.97-20,731.68

Finding the Fourth Proportional to 34,159.86, 47,135.97 and 20,731.68

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Solution

The fourth proportional to 34,159.86, 47,135.97 and 20,731.68 is: 28,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,159.86 : 47,135.97 = 20,731.68 : x
  2. Step 2: Convert to fraction form
    34,159.86/47,135.97 = 20,731.68/x
  3. Step 3: Cross multiply
    34,159.86x = 47,135.97 × 20,731.68
  4. Step 4: Simplify right side
    34,159.86x = 977,207,846.53
  5. Step 5: Solve for x
    x = 977,207,846.53/34,159.86
  6. Step 6: Final answer
    x = 28,606.90

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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.