Home / 28,074.08-38,742.52-15,498.80

Finding the Fourth Proportional to 28,074.08, 38,742.52 and 15,498.80

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Solution

The fourth proportional to 28,074.08, 38,742.52 and 15,498.80 is: 21,388.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.08 : 38,742.52 = 15,498.80 : x
  2. Step 2: Convert to fraction form
    28,074.08/38,742.52 = 15,498.80/x
  3. Step 3: Cross multiply
    28,074.08x = 38,742.52 × 15,498.80
  4. Step 4: Simplify right side
    28,074.08x = 600,462,568.98
  5. Step 5: Solve for x
    x = 600,462,568.98/28,074.08
  6. Step 6: Final answer
    x = 21,388.50

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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.