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Finding the Fourth Proportional to 22,903.80, 34,355.70 and 15,905.40

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Solution

The fourth proportional to 22,903.80, 34,355.70 and 15,905.40 is: 23,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,903.80 : 34,355.70 = 15,905.40 : x
  2. Step 2: Convert to fraction form
    22,903.80/34,355.70 = 15,905.40/x
  3. Step 3: Cross multiply
    22,903.80x = 34,355.70 × 15,905.40
  4. Step 4: Simplify right side
    22,903.80x = 546,441,150.78
  5. Step 5: Solve for x
    x = 546,441,150.78/22,903.80
  6. Step 6: Final answer
    x = 23,858.10

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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.