Home / 18,705.68-25,817.54-11,148.23

Finding the Fourth Proportional to 18,705.68, 25,817.54 and 11,148.23

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Solution

The fourth proportional to 18,705.68, 25,817.54 and 11,148.23 is: 15,386.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.68 : 25,817.54 = 11,148.23 : x
  2. Step 2: Convert to fraction form
    18,705.68/25,817.54 = 11,148.23/x
  3. Step 3: Cross multiply
    18,705.68x = 25,817.54 × 11,148.23
  4. Step 4: Simplify right side
    18,705.68x = 287,819,882.76
  5. Step 5: Solve for x
    x = 287,819,882.76/18,705.68
  6. Step 6: Final answer
    x = 15,386.76

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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.