Home / 15,270.17-21,072.25-8,555.46

Finding the Fourth Proportional to 15,270.17, 21,072.25 and 8,555.46

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Solution

The fourth proportional to 15,270.17, 21,072.25 and 8,555.46 is: 11,806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,270.17 : 21,072.25 = 8,555.46 : x
  2. Step 2: Convert to fraction form
    15,270.17/21,072.25 = 8,555.46/x
  3. Step 3: Cross multiply
    15,270.17x = 21,072.25 × 8,555.46
  4. Step 4: Simplify right side
    15,270.17x = 180,282,749.21
  5. Step 5: Solve for x
    x = 180,282,749.21/15,270.17
  6. Step 6: Final answer
    x = 11,806.20

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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.