Home / 28,689.11-43,023.99-10,915.55

Finding the Fourth Proportional to 28,689.11, 43,023.99 and 10,915.55

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Solution

The fourth proportional to 28,689.11, 43,023.99 and 10,915.55 is: 16,369.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,689.11 : 43,023.99 = 10,915.55 : x
  2. Step 2: Convert to fraction form
    28,689.11/43,023.99 = 10,915.55/x
  3. Step 3: Cross multiply
    28,689.11x = 43,023.99 × 10,915.55
  4. Step 4: Simplify right side
    28,689.11x = 469,630,514.04
  5. Step 5: Solve for x
    x = 469,630,514.04/28,689.11
  6. Step 6: Final answer
    x = 16,369.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.