Home / 17,145.90-25,720.71-5,456.40

Finding the Fourth Proportional to 17,145.90, 25,720.71 and 5,456.40

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Solution

The fourth proportional to 17,145.90, 25,720.71 and 5,456.40 is: 8,185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,145.90 : 25,720.71 = 5,456.40 : x
  2. Step 2: Convert to fraction form
    17,145.90/25,720.71 = 5,456.40/x
  3. Step 3: Cross multiply
    17,145.90x = 25,720.71 × 5,456.40
  4. Step 4: Simplify right side
    17,145.90x = 140,342,482.04
  5. Step 5: Solve for x
    x = 140,342,482.04/17,145.90
  6. Step 6: Final answer
    x = 8,185.19

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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.