Home / 15,015.06-20,721.57-8,642.62

Finding the Fourth Proportional to 15,015.06, 20,721.57 and 8,642.62

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Solution

The fourth proportional to 15,015.06, 20,721.57 and 8,642.62 is: 11,927.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.06 : 20,721.57 = 8,642.62 : x
  2. Step 2: Convert to fraction form
    15,015.06/20,721.57 = 8,642.62/x
  3. Step 3: Cross multiply
    15,015.06x = 20,721.57 × 8,642.62
  4. Step 4: Simplify right side
    15,015.06x = 179,088,655.31
  5. Step 5: Solve for x
    x = 179,088,655.31/15,015.06
  6. Step 6: Final answer
    x = 11,927.27

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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.