Home / 22,389.62-30,897.63-12,318.21

Finding the Fourth Proportional to 22,389.62, 30,897.63 and 12,318.21

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Solution

The fourth proportional to 22,389.62, 30,897.63 and 12,318.21 is: 16,999.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,389.62 : 30,897.63 = 12,318.21 : x
  2. Step 2: Convert to fraction form
    22,389.62/30,897.63 = 12,318.21/x
  3. Step 3: Cross multiply
    22,389.62x = 30,897.63 × 12,318.21
  4. Step 4: Simplify right side
    22,389.62x = 380,603,494.84
  5. Step 5: Solve for x
    x = 380,603,494.84/22,389.62
  6. Step 6: Final answer
    x = 16,999.11

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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.