Home / 15,081.28-22,621.91-5,215.17

Finding the Fourth Proportional to 15,081.28, 22,621.91 and 5,215.17

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Solution

The fourth proportional to 15,081.28, 22,621.91 and 5,215.17 is: 7,822.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,081.28 : 22,621.91 = 5,215.17 : x
  2. Step 2: Convert to fraction form
    15,081.28/22,621.91 = 5,215.17/x
  3. Step 3: Cross multiply
    15,081.28x = 22,621.91 × 5,215.17
  4. Step 4: Simplify right side
    15,081.28x = 117,977,106.37
  5. Step 5: Solve for x
    x = 117,977,106.37/15,081.28
  6. Step 6: Final answer
    x = 7,822.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.