Home / 22,330.90-30,816.78-12,259.78

Finding the Fourth Proportional to 22,330.90, 30,816.78 and 12,259.78

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Solution

The fourth proportional to 22,330.90, 30,816.78 and 12,259.78 is: 16,918.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,330.90 : 30,816.78 = 12,259.78 : x
  2. Step 2: Convert to fraction form
    22,330.90/30,816.78 = 12,259.78/x
  3. Step 3: Cross multiply
    22,330.90x = 30,816.78 × 12,259.78
  4. Step 4: Simplify right side
    22,330.90x = 377,806,943.11
  5. Step 5: Solve for x
    x = 377,806,943.11/22,330.90
  6. Step 6: Final answer
    x = 16,918.57

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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.