Home / 21,860.40-32,741.27-15,315.80

Finding the Fourth Proportional to 21,860.40, 32,741.27 and 15,315.80

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Solution

The fourth proportional to 21,860.40, 32,741.27 and 15,315.80 is: 22,939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.40 : 32,741.27 = 15,315.80 : x
  2. Step 2: Convert to fraction form
    21,860.40/32,741.27 = 15,315.80/x
  3. Step 3: Cross multiply
    21,860.40x = 32,741.27 × 15,315.80
  4. Step 4: Simplify right side
    21,860.40x = 501,458,502.78
  5. Step 5: Solve for x
    x = 501,458,502.78/21,860.40
  6. Step 6: Final answer
    x = 22,939.13

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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.