Home / 23,138.16-31,929.40-13,576.76

Finding the Fourth Proportional to 23,138.16, 31,929.40 and 13,576.76

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Solution

The fourth proportional to 23,138.16, 31,929.40 and 13,576.76 is: 18,735.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,138.16 : 31,929.40 = 13,576.76 : x
  2. Step 2: Convert to fraction form
    23,138.16/31,929.40 = 13,576.76/x
  3. Step 3: Cross multiply
    23,138.16x = 31,929.40 × 13,576.76
  4. Step 4: Simplify right side
    23,138.16x = 433,497,800.74
  5. Step 5: Solve for x
    x = 433,497,800.74/23,138.16
  6. Step 6: Final answer
    x = 18,735.19

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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.