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Finding the Fourth Proportional to 23,312.30, 34,978.79 and 12,216.35

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Solution

The fourth proportional to 23,312.30, 34,978.79 and 12,216.35 is: 18,329.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,312.30 : 34,978.79 = 12,216.35 : x
  2. Step 2: Convert to fraction form
    23,312.30/34,978.79 = 12,216.35/x
  3. Step 3: Cross multiply
    23,312.30x = 34,978.79 × 12,216.35
  4. Step 4: Simplify right side
    23,312.30x = 427,313,080.13
  5. Step 5: Solve for x
    x = 427,313,080.13/23,312.30
  6. Step 6: Final answer
    x = 18,329.94

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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.