Home / 18,926.95-28,392.18-6,442.78

Finding the Fourth Proportional to 18,926.95, 28,392.18 and 6,442.78

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Solution

The fourth proportional to 18,926.95, 28,392.18 and 6,442.78 is: 9,664.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.95 : 28,392.18 = 6,442.78 : x
  2. Step 2: Convert to fraction form
    18,926.95/28,392.18 = 6,442.78/x
  3. Step 3: Cross multiply
    18,926.95x = 28,392.18 × 6,442.78
  4. Step 4: Simplify right side
    18,926.95x = 182,924,569.46
  5. Step 5: Solve for x
    x = 182,924,569.46/18,926.95
  6. Step 6: Final answer
    x = 9,664.77

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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.