Home / 13,179.36-18,184.08-8,470.08

Finding the Fourth Proportional to 13,179.36, 18,184.08 and 8,470.08

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Solution

The fourth proportional to 13,179.36, 18,184.08 and 8,470.08 is: 11,686.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.36 : 18,184.08 = 8,470.08 : x
  2. Step 2: Convert to fraction form
    13,179.36/18,184.08 = 8,470.08/x
  3. Step 3: Cross multiply
    13,179.36x = 18,184.08 × 8,470.08
  4. Step 4: Simplify right side
    13,179.36x = 154,020,612.33
  5. Step 5: Solve for x
    x = 154,020,612.33/13,179.36
  6. Step 6: Final answer
    x = 11,686.50

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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.