Home / 28,416.72-42,600.78-10,899.12

Finding the Fourth Proportional to 28,416.72, 42,600.78 and 10,899.12

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Solution

The fourth proportional to 28,416.72, 42,600.78 and 10,899.12 is: 16,339.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,416.72 : 42,600.78 = 10,899.12 : x
  2. Step 2: Convert to fraction form
    28,416.72/42,600.78 = 10,899.12/x
  3. Step 3: Cross multiply
    28,416.72x = 42,600.78 × 10,899.12
  4. Step 4: Simplify right side
    28,416.72x = 464,311,013.31
  5. Step 5: Solve for x
    x = 464,311,013.31/28,416.72
  6. Step 6: Final answer
    x = 16,339.36

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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.