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Finding the Fourth Proportional to 28,813.80, 43,210.80 and 14,013.24

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Solution

The fourth proportional to 28,813.80, 43,210.80 and 14,013.24 is: 21,015.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,813.80 : 43,210.80 = 14,013.24 : x
  2. Step 2: Convert to fraction form
    28,813.80/43,210.80 = 14,013.24/x
  3. Step 3: Cross multiply
    28,813.80x = 43,210.80 × 14,013.24
  4. Step 4: Simplify right side
    28,813.80x = 605,523,310.99
  5. Step 5: Solve for x
    x = 605,523,310.99/28,813.80
  6. Step 6: Final answer
    x = 21,015.05

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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.