Home / 12,455.08-17,209.89-9,957.80

Finding the Fourth Proportional to 12,455.08, 17,209.89 and 9,957.80

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Solution

The fourth proportional to 12,455.08, 17,209.89 and 9,957.80 is: 13,759.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.08 : 17,209.89 = 9,957.80 : x
  2. Step 2: Convert to fraction form
    12,455.08/17,209.89 = 9,957.80/x
  3. Step 3: Cross multiply
    12,455.08x = 17,209.89 × 9,957.80
  4. Step 4: Simplify right side
    12,455.08x = 171,372,685.67
  5. Step 5: Solve for x
    x = 171,372,685.67/12,455.08
  6. Step 6: Final answer
    x = 13,759.26

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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.