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Finding the Fourth Proportional to 43,304.40, 64,980.90 and 18,340.20

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Solution

The fourth proportional to 43,304.40, 64,980.90 and 18,340.20 is: 27,520.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,304.40 : 64,980.90 = 18,340.20 : x
  2. Step 2: Convert to fraction form
    43,304.40/64,980.90 = 18,340.20/x
  3. Step 3: Cross multiply
    43,304.40x = 64,980.90 × 18,340.20
  4. Step 4: Simplify right side
    43,304.40x = 1,191,762,702.18
  5. Step 5: Solve for x
    x = 1,191,762,702.18/43,304.40
  6. Step 6: Final answer
    x = 27,520.59

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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.