Home / 28,007.82-38,650.91-15,432.57

Finding the Fourth Proportional to 28,007.82, 38,650.91 and 15,432.57

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Solution

The fourth proportional to 28,007.82, 38,650.91 and 15,432.57 is: 21,297.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.82 : 38,650.91 = 15,432.57 : x
  2. Step 2: Convert to fraction form
    28,007.82/38,650.91 = 15,432.57/x
  3. Step 3: Cross multiply
    28,007.82x = 38,650.91 × 15,432.57
  4. Step 4: Simplify right side
    28,007.82x = 596,482,874.14
  5. Step 5: Solve for x
    x = 596,482,874.14/28,007.82
  6. Step 6: Final answer
    x = 21,297.01

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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.