Home / 11,981.45-16,534.40-6,603.71

Finding the Fourth Proportional to 11,981.45, 16,534.40 and 6,603.71

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Solution

The fourth proportional to 11,981.45, 16,534.40 and 6,603.71 is: 9,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.45 : 16,534.40 = 6,603.71 : x
  2. Step 2: Convert to fraction form
    11,981.45/16,534.40 = 6,603.71/x
  3. Step 3: Cross multiply
    11,981.45x = 16,534.40 × 6,603.71
  4. Step 4: Simplify right side
    11,981.45x = 109,188,266.93
  5. Step 5: Solve for x
    x = 109,188,266.93/11,981.45
  6. Step 6: Final answer
    x = 9,113.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.