Home / 28,161.54-38,862.84-15,240.80

Finding the Fourth Proportional to 28,161.54, 38,862.84 and 15,240.80

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Solution

The fourth proportional to 28,161.54, 38,862.84 and 15,240.80 is: 21,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.54 : 38,862.84 = 15,240.80 : x
  2. Step 2: Convert to fraction form
    28,161.54/38,862.84 = 15,240.80/x
  3. Step 3: Cross multiply
    28,161.54x = 38,862.84 × 15,240.80
  4. Step 4: Simplify right side
    28,161.54x = 592,300,577.56
  5. Step 5: Solve for x
    x = 592,300,577.56/28,161.54
  6. Step 6: Final answer
    x = 21,032.25

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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.