Home / 15,688.20-23,570.70-11,800.20

Finding the Fourth Proportional to 15,688.20, 23,570.70 and 11,800.20

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Solution

The fourth proportional to 15,688.20, 23,570.70 and 11,800.20 is: 17,729.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,688.20 : 23,570.70 = 11,800.20 : x
  2. Step 2: Convert to fraction form
    15,688.20/23,570.70 = 11,800.20/x
  3. Step 3: Cross multiply
    15,688.20x = 23,570.70 × 11,800.20
  4. Step 4: Simplify right side
    15,688.20x = 278,138,974.14
  5. Step 5: Solve for x
    x = 278,138,974.14/15,688.20
  6. Step 6: Final answer
    x = 17,729.18

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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.