Home / 15,269.51-21,071.81-8,555.20

Finding the Fourth Proportional to 15,269.51, 21,071.81 and 8,555.20

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Solution

The fourth proportional to 15,269.51, 21,071.81 and 8,555.20 is: 11,806.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,269.51 : 21,071.81 = 8,555.20 : x
  2. Step 2: Convert to fraction form
    15,269.51/21,071.81 = 8,555.20/x
  3. Step 3: Cross multiply
    15,269.51x = 21,071.81 × 8,555.20
  4. Step 4: Simplify right side
    15,269.51x = 180,273,517.62
  5. Step 5: Solve for x
    x = 180,273,517.62/15,269.51
  6. Step 6: Final answer
    x = 11,806.11

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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.