Home / 23,128.40-31,908.60-15,175.04

Finding the Fourth Proportional to 23,128.40, 31,908.60 and 15,175.04

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Solution

The fourth proportional to 23,128.40, 31,908.60 and 15,175.04 is: 20,935.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,128.40 : 31,908.60 = 15,175.04 : x
  2. Step 2: Convert to fraction form
    23,128.40/31,908.60 = 15,175.04/x
  3. Step 3: Cross multiply
    23,128.40x = 31,908.60 × 15,175.04
  4. Step 4: Simplify right side
    23,128.40x = 484,214,281.34
  5. Step 5: Solve for x
    x = 484,214,281.34/23,128.40
  6. Step 6: Final answer
    x = 20,935.92

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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.