Home / 20,734.59-31,079.73-11,830.74

Finding the Fourth Proportional to 20,734.59, 31,079.73 and 11,830.74

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Solution

The fourth proportional to 20,734.59, 31,079.73 and 11,830.74 is: 17,733.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.59 : 31,079.73 = 11,830.74 : x
  2. Step 2: Convert to fraction form
    20,734.59/31,079.73 = 11,830.74/x
  3. Step 3: Cross multiply
    20,734.59x = 31,079.73 × 11,830.74
  4. Step 4: Simplify right side
    20,734.59x = 367,696,204.90
  5. Step 5: Solve for x
    x = 367,696,204.90/20,734.59
  6. Step 6: Final answer
    x = 17,733.47

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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.