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Finding the Fourth Proportional to 22,809.12, 34,179.12 and 16,938.40

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Solution

The fourth proportional to 22,809.12, 34,179.12 and 16,938.40 is: 25,381.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,809.12 : 34,179.12 = 16,938.40 : x
  2. Step 2: Convert to fraction form
    22,809.12/34,179.12 = 16,938.40/x
  3. Step 3: Cross multiply
    22,809.12x = 34,179.12 × 16,938.40
  4. Step 4: Simplify right side
    22,809.12x = 578,939,606.21
  5. Step 5: Solve for x
    x = 578,939,606.21/22,809.12
  6. Step 6: Final answer
    x = 25,381.94

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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.