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Finding the Fourth Proportional to 20,315.00, 28,037.30 and 11,363.00

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Solution

The fourth proportional to 20,315.00, 28,037.30 and 11,363.00 is: 15,682.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.00 : 28,037.30 = 11,363.00 : x
  2. Step 2: Convert to fraction form
    20,315.00/28,037.30 = 11,363.00/x
  3. Step 3: Cross multiply
    20,315.00x = 28,037.30 × 11,363.00
  4. Step 4: Simplify right side
    20,315.00x = 318,587,642.90
  5. Step 5: Solve for x
    x = 318,587,642.90/20,315.00
  6. Step 6: Final answer
    x = 15,682.39

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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.