Home / 18,311.18-27,442.82-9,988.95

Finding the Fourth Proportional to 18,311.18, 27,442.82 and 9,988.95

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Solution

The fourth proportional to 18,311.18, 27,442.82 and 9,988.95 is: 14,970.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.18 : 27,442.82 = 9,988.95 : x
  2. Step 2: Convert to fraction form
    18,311.18/27,442.82 = 9,988.95/x
  3. Step 3: Cross multiply
    18,311.18x = 27,442.82 × 9,988.95
  4. Step 4: Simplify right side
    18,311.18x = 274,124,981.81
  5. Step 5: Solve for x
    x = 274,124,981.81/18,311.18
  6. Step 6: Final answer
    x = 14,970.37

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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.