Home / 15,218.52-21,003.65-8,758.03

Finding the Fourth Proportional to 15,218.52, 21,003.65 and 8,758.03

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Solution

The fourth proportional to 15,218.52, 21,003.65 and 8,758.03 is: 12,087.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.52 : 21,003.65 = 8,758.03 : x
  2. Step 2: Convert to fraction form
    15,218.52/21,003.65 = 8,758.03/x
  3. Step 3: Cross multiply
    15,218.52x = 21,003.65 × 8,758.03
  4. Step 4: Simplify right side
    15,218.52x = 183,950,448.00
  5. Step 5: Solve for x
    x = 183,950,448.00/15,218.52
  6. Step 6: Final answer
    x = 12,087.28

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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.