Home / 28,119.24-38,802.60-15,543

Finding the Fourth Proportional to 28,119.24, 38,802.60 and 15,543

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Solution

The fourth proportional to 28,119.24, 38,802.60 and 15,543 is: 21,448.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.24 : 38,802.60 = 15,543 : x
  2. Step 2: Convert to fraction form
    28,119.24/38,802.60 = 15,543/x
  3. Step 3: Cross multiply
    28,119.24x = 38,802.60 × 15,543
  4. Step 4: Simplify right side
    28,119.24x = 603,108,811.80
  5. Step 5: Solve for x
    x = 603,108,811.80/28,119.24
  6. Step 6: Final answer
    x = 21,448.26

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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.