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Finding the Fourth Proportional to 28,155, 42,247.08 and 14,304

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Solution

The fourth proportional to 28,155, 42,247.08 and 14,304 is: 21,463.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155 : 42,247.08 = 14,304 : x
  2. Step 2: Convert to fraction form
    28,155/42,247.08 = 14,304/x
  3. Step 3: Cross multiply
    28,155x = 42,247.08 × 14,304
  4. Step 4: Simplify right side
    28,155x = 604,302,232.32
  5. Step 5: Solve for x
    x = 604,302,232.32/28,155
  6. Step 6: Final answer
    x = 21,463.41

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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.