Home / 11,813.31-16,287.21-9,681.12

Finding the Fourth Proportional to 11,813.31, 16,287.21 and 9,681.12

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Solution

The fourth proportional to 11,813.31, 16,287.21 and 9,681.12 is: 13,347.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.31 : 16,287.21 = 9,681.12 : x
  2. Step 2: Convert to fraction form
    11,813.31/16,287.21 = 9,681.12/x
  3. Step 3: Cross multiply
    11,813.31x = 16,287.21 × 9,681.12
  4. Step 4: Simplify right side
    11,813.31x = 157,678,434.48
  5. Step 5: Solve for x
    x = 157,678,434.48/11,813.31
  6. Step 6: Final answer
    x = 13,347.52

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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.