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Finding the Fourth Proportional to 19,959.20, 27,543.88 and 11,007.02

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Solution

The fourth proportional to 19,959.20, 27,543.88 and 11,007.02 is: 15,189.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.20 : 27,543.88 = 11,007.02 : x
  2. Step 2: Convert to fraction form
    19,959.20/27,543.88 = 11,007.02/x
  3. Step 3: Cross multiply
    19,959.20x = 27,543.88 × 11,007.02
  4. Step 4: Simplify right side
    19,959.20x = 303,176,038.04
  5. Step 5: Solve for x
    x = 303,176,038.04/19,959.20
  6. Step 6: Final answer
    x = 15,189.79

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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.