Home / 23,130.68-31,920.21-13,059.34

Finding the Fourth Proportional to 23,130.68, 31,920.21 and 13,059.34

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Solution

The fourth proportional to 23,130.68, 31,920.21 and 13,059.34 is: 18,021.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,130.68 : 31,920.21 = 13,059.34 : x
  2. Step 2: Convert to fraction form
    23,130.68/31,920.21 = 13,059.34/x
  3. Step 3: Cross multiply
    23,130.68x = 31,920.21 × 13,059.34
  4. Step 4: Simplify right side
    23,130.68x = 416,856,795.46
  5. Step 5: Solve for x
    x = 416,856,795.46/23,130.68
  6. Step 6: Final answer
    x = 18,021.82

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Double scale
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Similar ratio
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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.