Home / 21,860.71-30,167.12-12,301.13

Finding the Fourth Proportional to 21,860.71, 30,167.12 and 12,301.13

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Solution

The fourth proportional to 21,860.71, 30,167.12 and 12,301.13 is: 16,975.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.71 : 30,167.12 = 12,301.13 : x
  2. Step 2: Convert to fraction form
    21,860.71/30,167.12 = 12,301.13/x
  3. Step 3: Cross multiply
    21,860.71x = 30,167.12 × 12,301.13
  4. Step 4: Simplify right side
    21,860.71x = 371,089,664.85
  5. Step 5: Solve for x
    x = 371,089,664.85/21,860.71
  6. Step 6: Final answer
    x = 16,975.19

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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.