Home / 11,813.81-16,287.85-9,681.53

Finding the Fourth Proportional to 11,813.81, 16,287.85 and 9,681.53

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Solution

The fourth proportional to 11,813.81, 16,287.85 and 9,681.53 is: 13,348.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.81 : 16,287.85 = 9,681.53 : x
  2. Step 2: Convert to fraction form
    11,813.81/16,287.85 = 9,681.53/x
  3. Step 3: Cross multiply
    11,813.81x = 16,287.85 × 9,681.53
  4. Step 4: Simplify right side
    11,813.81x = 157,691,308.41
  5. Step 5: Solve for x
    x = 157,691,308.41/11,813.81
  6. Step 6: Final answer
    x = 13,348.05

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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.