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Finding the Fourth Proportional to 18,458.55, 27,687.76 and 4,607.55

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Solution

The fourth proportional to 18,458.55, 27,687.76 and 4,607.55 is: 6,911.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.55 : 27,687.76 = 4,607.55 : x
  2. Step 2: Convert to fraction form
    18,458.55/27,687.76 = 4,607.55/x
  3. Step 3: Cross multiply
    18,458.55x = 27,687.76 × 4,607.55
  4. Step 4: Simplify right side
    18,458.55x = 127,572,727.07
  5. Step 5: Solve for x
    x = 127,572,727.07/18,458.55
  6. Step 6: Final answer
    x = 6,911.31

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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.