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Finding the Fourth Proportional to 14,608.80, 21,902.40 and 9,917.10

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Solution

The fourth proportional to 14,608.80, 21,902.40 and 9,917.10 is: 14,868.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,608.80 : 21,902.40 = 9,917.10 : x
  2. Step 2: Convert to fraction form
    14,608.80/21,902.40 = 9,917.10/x
  3. Step 3: Cross multiply
    14,608.80x = 21,902.40 × 9,917.10
  4. Step 4: Simplify right side
    14,608.80x = 217,208,291.04
  5. Step 5: Solve for x
    x = 217,208,291.04/14,608.80
  6. Step 6: Final answer
    x = 14,868.32

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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.