Home / 15,431.68-23,128.96-7,100.21

Finding the Fourth Proportional to 15,431.68, 23,128.96 and 7,100.21

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Solution

The fourth proportional to 15,431.68, 23,128.96 and 7,100.21 is: 10,641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.68 : 23,128.96 = 7,100.21 : x
  2. Step 2: Convert to fraction form
    15,431.68/23,128.96 = 7,100.21/x
  3. Step 3: Cross multiply
    15,431.68x = 23,128.96 × 7,100.21
  4. Step 4: Simplify right side
    15,431.68x = 164,220,473.08
  5. Step 5: Solve for x
    x = 164,220,473.08/15,431.68
  6. Step 6: Final answer
    x = 10,641.78

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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.