Home / 28,152.09-38,849.57-15,405.23

Finding the Fourth Proportional to 28,152.09, 38,849.57 and 15,405.23

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Solution

The fourth proportional to 28,152.09, 38,849.57 and 15,405.23 is: 21,259.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,152.09 : 38,849.57 = 15,405.23 : x
  2. Step 2: Convert to fraction form
    28,152.09/38,849.57 = 15,405.23/x
  3. Step 3: Cross multiply
    28,152.09x = 38,849.57 × 15,405.23
  4. Step 4: Simplify right side
    28,152.09x = 598,486,289.98
  5. Step 5: Solve for x
    x = 598,486,289.98/28,152.09
  6. Step 6: Final answer
    x = 21,259.04

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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.