Home / 15,016.05-20,721.69-9,051.21

Finding the Fourth Proportional to 15,016.05, 20,721.69 and 9,051.21

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Solution

The fourth proportional to 15,016.05, 20,721.69 and 9,051.21 is: 12,490.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.05 : 20,721.69 = 9,051.21 : x
  2. Step 2: Convert to fraction form
    15,016.05/20,721.69 = 9,051.21/x
  3. Step 3: Cross multiply
    15,016.05x = 20,721.69 × 9,051.21
  4. Step 4: Simplify right side
    15,016.05x = 187,556,367.74
  5. Step 5: Solve for x
    x = 187,556,367.74/15,016.05
  6. Step 6: Final answer
    x = 12,490.39

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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.