Home / 27,157.09-37,478.33-15,221.20

Finding the Fourth Proportional to 27,157.09, 37,478.33 and 15,221.20

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Solution

The fourth proportional to 27,157.09, 37,478.33 and 15,221.20 is: 21,006.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,157.09 : 37,478.33 = 15,221.20 : x
  2. Step 2: Convert to fraction form
    27,157.09/37,478.33 = 15,221.20/x
  3. Step 3: Cross multiply
    27,157.09x = 37,478.33 × 15,221.20
  4. Step 4: Simplify right side
    27,157.09x = 570,465,156.60
  5. Step 5: Solve for x
    x = 570,465,156.60/27,157.09
  6. Step 6: Final answer
    x = 21,006.12

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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.