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Finding the Fourth Proportional to 18,865.95, 28,298.89 and 5,014.95

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Solution

The fourth proportional to 18,865.95, 28,298.89 and 5,014.95 is: 7,522.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.95 : 28,298.89 = 5,014.95 : x
  2. Step 2: Convert to fraction form
    18,865.95/28,298.89 = 5,014.95/x
  3. Step 3: Cross multiply
    18,865.95x = 28,298.89 × 5,014.95
  4. Step 4: Simplify right side
    18,865.95x = 141,917,351.84
  5. Step 5: Solve for x
    x = 141,917,351.84/18,865.95
  6. Step 6: Final answer
    x = 7,522.41

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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.