Home / 15,370.56-21,211.38-8,656.20

Finding the Fourth Proportional to 15,370.56, 21,211.38 and 8,656.20

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Solution

The fourth proportional to 15,370.56, 21,211.38 and 8,656.20 is: 11,945.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,370.56 : 21,211.38 = 8,656.20 : x
  2. Step 2: Convert to fraction form
    15,370.56/21,211.38 = 8,656.20/x
  3. Step 3: Cross multiply
    15,370.56x = 21,211.38 × 8,656.20
  4. Step 4: Simplify right side
    15,370.56x = 183,609,947.56
  5. Step 5: Solve for x
    x = 183,609,947.56/15,370.56
  6. Step 6: Final answer
    x = 11,945.56

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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.