Home / 11,585.09-15,987.47-6,279.90

Finding the Fourth Proportional to 11,585.09, 15,987.47 and 6,279.90

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Solution

The fourth proportional to 11,585.09, 15,987.47 and 6,279.90 is: 8,666.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,585.09 : 15,987.47 = 6,279.90 : x
  2. Step 2: Convert to fraction form
    11,585.09/15,987.47 = 6,279.90/x
  3. Step 3: Cross multiply
    11,585.09x = 15,987.47 × 6,279.90
  4. Step 4: Simplify right side
    11,585.09x = 100,399,681.45
  5. Step 5: Solve for x
    x = 100,399,681.45/11,585.09
  6. Step 6: Final answer
    x = 8,666.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.