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Finding the Fourth Proportional to 28,395.14, 42,619.07 and 14,365.08

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Solution

The fourth proportional to 28,395.14, 42,619.07 and 14,365.08 is: 21,560.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,395.14 : 42,619.07 = 14,365.08 : x
  2. Step 2: Convert to fraction form
    28,395.14/42,619.07 = 14,365.08/x
  3. Step 3: Cross multiply
    28,395.14x = 42,619.07 × 14,365.08
  4. Step 4: Simplify right side
    28,395.14x = 612,226,385.99
  5. Step 5: Solve for x
    x = 612,226,385.99/28,395.14
  6. Step 6: Final answer
    x = 21,560.96

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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.