Home / 20,312.56-28,022.52-12,249.52

Finding the Fourth Proportional to 20,312.56, 28,022.52 and 12,249.52

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Solution

The fourth proportional to 20,312.56, 28,022.52 and 12,249.52 is: 16,899.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.56 : 28,022.52 = 12,249.52 : x
  2. Step 2: Convert to fraction form
    20,312.56/28,022.52 = 12,249.52/x
  3. Step 3: Cross multiply
    20,312.56x = 28,022.52 × 12,249.52
  4. Step 4: Simplify right side
    20,312.56x = 343,262,419.19
  5. Step 5: Solve for x
    x = 343,262,419.19/20,312.56
  6. Step 6: Final answer
    x = 16,899.02

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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.