Home / 28,144.36-38,838.76-15,397.21

Finding the Fourth Proportional to 28,144.36, 38,838.76 and 15,397.21

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Solution

The fourth proportional to 28,144.36, 38,838.76 and 15,397.21 is: 21,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.36 : 38,838.76 = 15,397.21 : x
  2. Step 2: Convert to fraction form
    28,144.36/38,838.76 = 15,397.21/x
  3. Step 3: Cross multiply
    28,144.36x = 38,838.76 × 15,397.21
  4. Step 4: Simplify right side
    28,144.36x = 598,008,543.86
  5. Step 5: Solve for x
    x = 598,008,543.86/28,144.36
  6. Step 6: Final answer
    x = 21,247.90

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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.