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Finding the Fourth Proportional to 18,300.80, 27,426.48 and 13,347.20

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Solution

The fourth proportional to 18,300.80, 27,426.48 and 13,347.20 is: 20,002.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300.80 : 27,426.48 = 13,347.20 : x
  2. Step 2: Convert to fraction form
    18,300.80/27,426.48 = 13,347.20/x
  3. Step 3: Cross multiply
    18,300.80x = 27,426.48 × 13,347.20
  4. Step 4: Simplify right side
    18,300.80x = 366,066,713.86
  5. Step 5: Solve for x
    x = 366,066,713.86/18,300.80
  6. Step 6: Final answer
    x = 20,002.77

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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.