Home / 11,987.20-16,535.68-7,018.24

Finding the Fourth Proportional to 11,987.20, 16,535.68 and 7,018.24

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Solution

The fourth proportional to 11,987.20, 16,535.68 and 7,018.24 is: 9,681.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.20 : 16,535.68 = 7,018.24 : x
  2. Step 2: Convert to fraction form
    11,987.20/16,535.68 = 7,018.24/x
  3. Step 3: Cross multiply
    11,987.20x = 16,535.68 × 7,018.24
  4. Step 4: Simplify right side
    11,987.20x = 116,051,370.80
  5. Step 5: Solve for x
    x = 116,051,370.80/11,987.20
  6. Step 6: Final answer
    x = 9,681.27

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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.