Home / 21,187.50-31,760.56-10,091.22

Finding the Fourth Proportional to 21,187.50, 31,760.56 and 10,091.22

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Solution

The fourth proportional to 21,187.50, 31,760.56 and 10,091.22 is: 15,126.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.50 : 31,760.56 = 10,091.22 : x
  2. Step 2: Convert to fraction form
    21,187.50/31,760.56 = 10,091.22/x
  3. Step 3: Cross multiply
    21,187.50x = 31,760.56 × 10,091.22
  4. Step 4: Simplify right side
    21,187.50x = 320,502,798.28
  5. Step 5: Solve for x
    x = 320,502,798.28/21,187.50
  6. Step 6: Final answer
    x = 15,126.98

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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.