Home / 34,378.85-47,447.13-20,954.31

Finding the Fourth Proportional to 34,378.85, 47,447.13 and 20,954.31

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Solution

The fourth proportional to 34,378.85, 47,447.13 and 20,954.31 is: 28,919.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,378.85 : 47,447.13 = 20,954.31 : x
  2. Step 2: Convert to fraction form
    34,378.85/47,447.13 = 20,954.31/x
  3. Step 3: Cross multiply
    34,378.85x = 47,447.13 × 20,954.31
  4. Step 4: Simplify right side
    34,378.85x = 994,221,870.63
  5. Step 5: Solve for x
    x = 994,221,870.63/34,378.85
  6. Step 6: Final answer
    x = 28,919.58

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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.