Home / 13,711.28-20,565.29-3,578.99

Finding the Fourth Proportional to 13,711.28, 20,565.29 and 3,578.99

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Solution

The fourth proportional to 13,711.28, 20,565.29 and 3,578.99 is: 5,368.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.28 : 20,565.29 = 3,578.99 : x
  2. Step 2: Convert to fraction form
    13,711.28/20,565.29 = 3,578.99/x
  3. Step 3: Cross multiply
    13,711.28x = 20,565.29 × 3,578.99
  4. Step 4: Simplify right side
    13,711.28x = 73,602,873.38
  5. Step 5: Solve for x
    x = 73,602,873.38/13,711.28
  6. Step 6: Final answer
    x = 5,368.05

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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.