Home / 15,112.98-22,681.80-7,321.77

Finding the Fourth Proportional to 15,112.98, 22,681.80 and 7,321.77

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Solution

The fourth proportional to 15,112.98, 22,681.80 and 7,321.77 is: 10,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.98 : 22,681.80 = 7,321.77 : x
  2. Step 2: Convert to fraction form
    15,112.98/22,681.80 = 7,321.77/x
  3. Step 3: Cross multiply
    15,112.98x = 22,681.80 × 7,321.77
  4. Step 4: Simplify right side
    15,112.98x = 166,070,922.79
  5. Step 5: Solve for x
    x = 166,070,922.79/15,112.98
  6. Step 6: Final answer
    x = 10,988.63

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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.