Home / 11,587.80-17,357.40-6,387.60

Finding the Fourth Proportional to 11,587.80, 17,357.40 and 6,387.60

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Solution

The fourth proportional to 11,587.80, 17,357.40 and 6,387.60 is: 9,568.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,587.80 : 17,357.40 = 6,387.60 : x
  2. Step 2: Convert to fraction form
    11,587.80/17,357.40 = 6,387.60/x
  3. Step 3: Cross multiply
    11,587.80x = 17,357.40 × 6,387.60
  4. Step 4: Simplify right side
    11,587.80x = 110,872,128.24
  5. Step 5: Solve for x
    x = 110,872,128.24/11,587.80
  6. Step 6: Final answer
    x = 9,568.00

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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.