Home / 15,270.29-21,072.85-8,556.20

Finding the Fourth Proportional to 15,270.29, 21,072.85 and 8,556.20

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Solution

The fourth proportional to 15,270.29, 21,072.85 and 8,556.20 is: 11,807.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,270.29 : 21,072.85 = 8,556.20 : x
  2. Step 2: Convert to fraction form
    15,270.29/21,072.85 = 8,556.20/x
  3. Step 3: Cross multiply
    15,270.29x = 21,072.85 × 8,556.20
  4. Step 4: Simplify right side
    15,270.29x = 180,303,519.17
  5. Step 5: Solve for x
    x = 180,303,519.17/15,270.29
  6. Step 6: Final answer
    x = 11,807.47

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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.