Home / 28,578.15-39,439.28-17,247.47

Finding the Fourth Proportional to 28,578.15, 39,439.28 and 17,247.47

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Solution

The fourth proportional to 28,578.15, 39,439.28 and 17,247.47 is: 23,802.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.15 : 39,439.28 = 17,247.47 : x
  2. Step 2: Convert to fraction form
    28,578.15/39,439.28 = 17,247.47/x
  3. Step 3: Cross multiply
    28,578.15x = 39,439.28 × 17,247.47
  4. Step 4: Simplify right side
    28,578.15x = 680,227,515.19
  5. Step 5: Solve for x
    x = 680,227,515.19/28,578.15
  6. Step 6: Final answer
    x = 23,802.36

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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.