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Finding the Fourth Proportional to 18,760.56, 28,140.84 and 17,620.08

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Solution

The fourth proportional to 18,760.56, 28,140.84 and 17,620.08 is: 26,430.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.56 : 28,140.84 = 17,620.08 : x
  2. Step 2: Convert to fraction form
    18,760.56/28,140.84 = 17,620.08/x
  3. Step 3: Cross multiply
    18,760.56x = 28,140.84 × 17,620.08
  4. Step 4: Simplify right side
    18,760.56x = 495,843,852.07
  5. Step 5: Solve for x
    x = 495,843,852.07/18,760.56
  6. Step 6: Final answer
    x = 26,430.12

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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.