Home / 28,180.56-38,889.36-15,605.52

Finding the Fourth Proportional to 28,180.56, 38,889.36 and 15,605.52

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Solution

The fourth proportional to 28,180.56, 38,889.36 and 15,605.52 is: 21,535.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.56 : 38,889.36 = 15,605.52 : x
  2. Step 2: Convert to fraction form
    28,180.56/38,889.36 = 15,605.52/x
  3. Step 3: Cross multiply
    28,180.56x = 38,889.36 × 15,605.52
  4. Step 4: Simplify right side
    28,180.56x = 606,888,685.27
  5. Step 5: Solve for x
    x = 606,888,685.27/28,180.56
  6. Step 6: Final answer
    x = 21,535.72

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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.