Home / 10,681.12-16,015.44-7,175.20

Finding the Fourth Proportional to 10,681.12, 16,015.44 and 7,175.20

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Solution

The fourth proportional to 10,681.12, 16,015.44 and 7,175.20 is: 10,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,681.12 : 16,015.44 = 7,175.20 : x
  2. Step 2: Convert to fraction form
    10,681.12/16,015.44 = 7,175.20/x
  3. Step 3: Cross multiply
    10,681.12x = 16,015.44 × 7,175.20
  4. Step 4: Simplify right side
    10,681.12x = 114,913,985.09
  5. Step 5: Solve for x
    x = 114,913,985.09/10,681.12
  6. Step 6: Final answer
    x = 10,758.61

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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.