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Finding the Fourth Proportional to 12,657.93, 18,983.31 and 5,253.23

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Solution

The fourth proportional to 12,657.93, 18,983.31 and 5,253.23 is: 7,878.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.93 : 18,983.31 = 5,253.23 : x
  2. Step 2: Convert to fraction form
    12,657.93/18,983.31 = 5,253.23/x
  3. Step 3: Cross multiply
    12,657.93x = 18,983.31 × 5,253.23
  4. Step 4: Simplify right side
    12,657.93x = 99,723,693.59
  5. Step 5: Solve for x
    x = 99,723,693.59/12,657.93
  6. Step 6: Final answer
    x = 7,878.36

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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.