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Finding the Fourth Proportional to 9,999.10, 14,990.55 and 4,160.08

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Solution

The fourth proportional to 9,999.10, 14,990.55 and 4,160.08 is: 6,236.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.10 : 14,990.55 = 4,160.08 : x
  2. Step 2: Convert to fraction form
    9,999.10/14,990.55 = 4,160.08/x
  3. Step 3: Cross multiply
    9,999.10x = 14,990.55 × 4,160.08
  4. Step 4: Simplify right side
    9,999.10x = 62,361,887.24
  5. Step 5: Solve for x
    x = 62,361,887.24/9,999.10
  6. Step 6: Final answer
    x = 6,236.75

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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.