Home / 20,746.59-31,116.97-12,850.57

Finding the Fourth Proportional to 20,746.59, 31,116.97 and 12,850.57

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Solution

The fourth proportional to 20,746.59, 31,116.97 and 12,850.57 is: 19,274.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.59 : 31,116.97 = 12,850.57 : x
  2. Step 2: Convert to fraction form
    20,746.59/31,116.97 = 12,850.57/x
  3. Step 3: Cross multiply
    20,746.59x = 31,116.97 × 12,850.57
  4. Step 4: Simplify right side
    20,746.59x = 399,870,801.17
  5. Step 5: Solve for x
    x = 399,870,801.17/20,746.59
  6. Step 6: Final answer
    x = 19,274.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.