Home / 16,120.78-22,246.69-9,047.20

Finding the Fourth Proportional to 16,120.78, 22,246.69 and 9,047.20

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Solution

The fourth proportional to 16,120.78, 22,246.69 and 9,047.20 is: 12,485.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,120.78 : 22,246.69 = 9,047.20 : x
  2. Step 2: Convert to fraction form
    16,120.78/22,246.69 = 9,047.20/x
  3. Step 3: Cross multiply
    16,120.78x = 22,246.69 × 9,047.20
  4. Step 4: Simplify right side
    16,120.78x = 201,270,253.77
  5. Step 5: Solve for x
    x = 201,270,253.77/16,120.78
  6. Step 6: Final answer
    x = 12,485.14

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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.