Home / 21,986.07-32,987.40-13,227.13

Finding the Fourth Proportional to 21,986.07, 32,987.40 and 13,227.13

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Solution

The fourth proportional to 21,986.07, 32,987.40 and 13,227.13 is: 19,845.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.07 : 32,987.40 = 13,227.13 : x
  2. Step 2: Convert to fraction form
    21,986.07/32,987.40 = 13,227.13/x
  3. Step 3: Cross multiply
    21,986.07x = 32,987.40 × 13,227.13
  4. Step 4: Simplify right side
    21,986.07x = 436,328,628.16
  5. Step 5: Solve for x
    x = 436,328,628.16/21,986.07
  6. Step 6: Final answer
    x = 19,845.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.