Home / 34,759.10-47,974.20-20,619.74

Finding the Fourth Proportional to 34,759.10, 47,974.20 and 20,619.74

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Solution

The fourth proportional to 34,759.10, 47,974.20 and 20,619.74 is: 28,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,759.10 : 47,974.20 = 20,619.74 : x
  2. Step 2: Convert to fraction form
    34,759.10/47,974.20 = 20,619.74/x
  3. Step 3: Cross multiply
    34,759.10x = 47,974.20 × 20,619.74
  4. Step 4: Simplify right side
    34,759.10x = 989,215,530.71
  5. Step 5: Solve for x
    x = 989,215,530.71/34,759.10
  6. Step 6: Final answer
    x = 28,459.18

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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.