Home / 12,109.84-18,168.40-4,319.24

Finding the Fourth Proportional to 12,109.84, 18,168.40 and 4,319.24

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Solution

The fourth proportional to 12,109.84, 18,168.40 and 4,319.24 is: 6,480.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.84 : 18,168.40 = 4,319.24 : x
  2. Step 2: Convert to fraction form
    12,109.84/18,168.40 = 4,319.24/x
  3. Step 3: Cross multiply
    12,109.84x = 18,168.40 × 4,319.24
  4. Step 4: Simplify right side
    12,109.84x = 78,473,680.02
  5. Step 5: Solve for x
    x = 78,473,680.02/12,109.84
  6. Step 6: Final answer
    x = 6,480.16

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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.