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Finding the Fourth Proportional to 18,657.52, 27,986.64 and 5,510.16

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Solution

The fourth proportional to 18,657.52, 27,986.64 and 5,510.16 is: 8,265.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.52 : 27,986.64 = 5,510.16 : x
  2. Step 2: Convert to fraction form
    18,657.52/27,986.64 = 5,510.16/x
  3. Step 3: Cross multiply
    18,657.52x = 27,986.64 × 5,510.16
  4. Step 4: Simplify right side
    18,657.52x = 154,210,864.26
  5. Step 5: Solve for x
    x = 154,210,864.26/18,657.52
  6. Step 6: Final answer
    x = 8,265.35

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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.