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Finding the Fourth Proportional to 12,323.13, 16,995.99 and 7,845.45

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Solution

The fourth proportional to 12,323.13, 16,995.99 and 7,845.45 is: 10,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,323.13 : 16,995.99 = 7,845.45 : x
  2. Step 2: Convert to fraction form
    12,323.13/16,995.99 = 7,845.45/x
  3. Step 3: Cross multiply
    12,323.13x = 16,995.99 × 7,845.45
  4. Step 4: Simplify right side
    12,323.13x = 133,341,189.75
  5. Step 5: Solve for x
    x = 133,341,189.75/12,323.13
  6. Step 6: Final answer
    x = 10,820.40

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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.