Home / 23,175.12-31,979.93-15,631.68

Finding the Fourth Proportional to 23,175.12, 31,979.93 and 15,631.68

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Solution

The fourth proportional to 23,175.12, 31,979.93 and 15,631.68 is: 21,570.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,175.12 : 31,979.93 = 15,631.68 : x
  2. Step 2: Convert to fraction form
    23,175.12/31,979.93 = 15,631.68/x
  3. Step 3: Cross multiply
    23,175.12x = 31,979.93 × 15,631.68
  4. Step 4: Simplify right side
    23,175.12x = 499,899,954.02
  5. Step 5: Solve for x
    x = 499,899,954.02/23,175.12
  6. Step 6: Final answer
    x = 21,570.54

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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.