Home / 12,302.89-16,987.66-9,905.24

Finding the Fourth Proportional to 12,302.89, 16,987.66 and 9,905.24

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Solution

The fourth proportional to 12,302.89, 16,987.66 and 9,905.24 is: 13,677.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302.89 : 16,987.66 = 9,905.24 : x
  2. Step 2: Convert to fraction form
    12,302.89/16,987.66 = 9,905.24/x
  3. Step 3: Cross multiply
    12,302.89x = 16,987.66 × 9,905.24
  4. Step 4: Simplify right side
    12,302.89x = 168,266,867.04
  5. Step 5: Solve for x
    x = 168,266,867.04/12,302.89
  6. Step 6: Final answer
    x = 13,677.02

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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.