Home / 20,315.22-28,037.60-11,363.22

Finding the Fourth Proportional to 20,315.22, 28,037.60 and 11,363.22

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Solution

The fourth proportional to 20,315.22, 28,037.60 and 11,363.22 is: 15,682.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.22 : 28,037.60 = 11,363.22 : x
  2. Step 2: Convert to fraction form
    20,315.22/28,037.60 = 11,363.22/x
  3. Step 3: Cross multiply
    20,315.22x = 28,037.60 × 11,363.22
  4. Step 4: Simplify right side
    20,315.22x = 318,597,417.07
  5. Step 5: Solve for x
    x = 318,597,417.07/20,315.22
  6. Step 6: Final answer
    x = 15,682.70

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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.