Home / 28,128.90-38,816.28-15,552.84

Finding the Fourth Proportional to 28,128.90, 38,816.28 and 15,552.84

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Solution

The fourth proportional to 28,128.90, 38,816.28 and 15,552.84 is: 21,462.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128.90 : 38,816.28 = 15,552.84 : x
  2. Step 2: Convert to fraction form
    28,128.90/38,816.28 = 15,552.84/x
  3. Step 3: Cross multiply
    28,128.90x = 38,816.28 × 15,552.84
  4. Step 4: Simplify right side
    28,128.90x = 603,703,392.24
  5. Step 5: Solve for x
    x = 603,703,392.24/28,128.90
  6. Step 6: Final answer
    x = 21,462.03

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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.