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Finding the Fourth Proportional to 16,487.79, 22,751.31 and 9,316.93

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Solution

The fourth proportional to 16,487.79, 22,751.31 and 9,316.93 is: 12,856.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,487.79 : 22,751.31 = 9,316.93 : x
  2. Step 2: Convert to fraction form
    16,487.79/22,751.31 = 9,316.93/x
  3. Step 3: Cross multiply
    16,487.79x = 22,751.31 × 9,316.93
  4. Step 4: Simplify right side
    16,487.79x = 211,972,362.68
  5. Step 5: Solve for x
    x = 211,972,362.68/16,487.79
  6. Step 6: Final answer
    x = 12,856.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.