Home / 12,485.80-17,248.10-9,984.52

Finding the Fourth Proportional to 12,485.80, 17,248.10 and 9,984.52

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Solution

The fourth proportional to 12,485.80, 17,248.10 and 9,984.52 is: 13,792.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.80 : 17,248.10 = 9,984.52 : x
  2. Step 2: Convert to fraction form
    12,485.80/17,248.10 = 9,984.52/x
  3. Step 3: Cross multiply
    12,485.80x = 17,248.10 × 9,984.52
  4. Step 4: Simplify right side
    12,485.80x = 172,213,999.41
  5. Step 5: Solve for x
    x = 172,213,999.41/12,485.80
  6. Step 6: Final answer
    x = 13,792.79

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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.