Home / 16,987.18-25,454.80-7,121.08

Finding the Fourth Proportional to 16,987.18, 25,454.80 and 7,121.08

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Solution

The fourth proportional to 16,987.18, 25,454.80 and 7,121.08 is: 10,670.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,987.18 : 25,454.80 = 7,121.08 : x
  2. Step 2: Convert to fraction form
    16,987.18/25,454.80 = 7,121.08/x
  3. Step 3: Cross multiply
    16,987.18x = 25,454.80 × 7,121.08
  4. Step 4: Simplify right side
    16,987.18x = 181,265,667.18
  5. Step 5: Solve for x
    x = 181,265,667.18/16,987.18
  6. Step 6: Final answer
    x = 10,670.73

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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.