Home / 13,079.90-18,054.39-8,364.20

Finding the Fourth Proportional to 13,079.90, 18,054.39 and 8,364.20

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Solution

The fourth proportional to 13,079.90, 18,054.39 and 8,364.20 is: 11,545.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.90 : 18,054.39 = 8,364.20 : x
  2. Step 2: Convert to fraction form
    13,079.90/18,054.39 = 8,364.20/x
  3. Step 3: Cross multiply
    13,079.90x = 18,054.39 × 8,364.20
  4. Step 4: Simplify right side
    13,079.90x = 151,010,528.84
  5. Step 5: Solve for x
    x = 151,010,528.84/13,079.90
  6. Step 6: Final answer
    x = 11,545.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.