Home / 25,440.96-38,176.40-10,648.64

Finding the Fourth Proportional to 25,440.96, 38,176.40 and 10,648.64

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Solution

The fourth proportional to 25,440.96, 38,176.40 and 10,648.64 is: 15,979.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,440.96 : 38,176.40 = 10,648.64 : x
  2. Step 2: Convert to fraction form
    25,440.96/38,176.40 = 10,648.64/x
  3. Step 3: Cross multiply
    25,440.96x = 38,176.40 × 10,648.64
  4. Step 4: Simplify right side
    25,440.96x = 406,526,740.10
  5. Step 5: Solve for x
    x = 406,526,740.10/25,440.96
  6. Step 6: Final answer
    x = 15,979.22

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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.