Home / 19,680.80-27,158.68-10,728.08

Finding the Fourth Proportional to 19,680.80, 27,158.68 and 10,728.08

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Solution

The fourth proportional to 19,680.80, 27,158.68 and 10,728.08 is: 14,804.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.80 : 27,158.68 = 10,728.08 : x
  2. Step 2: Convert to fraction form
    19,680.80/27,158.68 = 10,728.08/x
  3. Step 3: Cross multiply
    19,680.80x = 27,158.68 × 10,728.08
  4. Step 4: Simplify right side
    19,680.80x = 291,360,491.73
  5. Step 5: Solve for x
    x = 291,360,491.73/19,680.80
  6. Step 6: Final answer
    x = 14,804.30

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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.