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Finding the Fourth Proportional to 28,995.80, 43,486.98 and 14,189.84

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Solution

The fourth proportional to 28,995.80, 43,486.98 and 14,189.84 is: 21,281.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995.80 : 43,486.98 = 14,189.84 : x
  2. Step 2: Convert to fraction form
    28,995.80/43,486.98 = 14,189.84/x
  3. Step 3: Cross multiply
    28,995.80x = 43,486.98 × 14,189.84
  4. Step 4: Simplify right side
    28,995.80x = 617,073,288.28
  5. Step 5: Solve for x
    x = 617,073,288.28/28,995.80
  6. Step 6: Final answer
    x = 21,281.47

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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.