Home / 15,017.03-20,721.30-8,556.74

Finding the Fourth Proportional to 15,017.03, 20,721.30 and 8,556.74

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Solution

The fourth proportional to 15,017.03, 20,721.30 and 8,556.74 is: 11,807.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.03 : 20,721.30 = 8,556.74 : x
  2. Step 2: Convert to fraction form
    15,017.03/20,721.30 = 8,556.74/x
  3. Step 3: Cross multiply
    15,017.03x = 20,721.30 × 8,556.74
  4. Step 4: Simplify right side
    15,017.03x = 177,306,776.56
  5. Step 5: Solve for x
    x = 177,306,776.56/15,017.03
  6. Step 6: Final answer
    x = 11,807.05

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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.