Home / 28,074.18-38,738.88-15,498.84

Finding the Fourth Proportional to 28,074.18, 38,738.88 and 15,498.84

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Solution

The fourth proportional to 28,074.18, 38,738.88 and 15,498.84 is: 21,386.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.18 : 38,738.88 = 15,498.84 : x
  2. Step 2: Convert to fraction form
    28,074.18/38,738.88 = 15,498.84/x
  3. Step 3: Cross multiply
    28,074.18x = 38,738.88 × 15,498.84
  4. Step 4: Simplify right side
    28,074.18x = 600,407,702.90
  5. Step 5: Solve for x
    x = 600,407,702.90/28,074.18
  6. Step 6: Final answer
    x = 21,386.47

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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.