Home / 22,436.51-30,939.50-15,719.99

Finding the Fourth Proportional to 22,436.51, 30,939.50 and 15,719.99

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Solution

The fourth proportional to 22,436.51, 30,939.50 and 15,719.99 is: 21,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,436.51 : 30,939.50 = 15,719.99 : x
  2. Step 2: Convert to fraction form
    22,436.51/30,939.50 = 15,719.99/x
  3. Step 3: Cross multiply
    22,436.51x = 30,939.50 × 15,719.99
  4. Step 4: Simplify right side
    22,436.51x = 486,368,515.21
  5. Step 5: Solve for x
    x = 486,368,515.21/22,436.51
  6. Step 6: Final answer
    x = 21,677.55

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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.