Home / 28,569.81-42,867.02-15,419.57

Finding the Fourth Proportional to 28,569.81, 42,867.02 and 15,419.57

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Solution

The fourth proportional to 28,569.81, 42,867.02 and 15,419.57 is: 23,135.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.81 : 42,867.02 = 15,419.57 : x
  2. Step 2: Convert to fraction form
    28,569.81/42,867.02 = 15,419.57/x
  3. Step 3: Cross multiply
    28,569.81x = 42,867.02 × 15,419.57
  4. Step 4: Simplify right side
    28,569.81x = 660,990,839.80
  5. Step 5: Solve for x
    x = 660,990,839.80/28,569.81
  6. Step 6: Final answer
    x = 23,135.99

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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.