Home / 13,376.15-18,468.05-8,342.40

Finding the Fourth Proportional to 13,376.15, 18,468.05 and 8,342.40

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Solution

The fourth proportional to 13,376.15, 18,468.05 and 8,342.40 is: 11,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.15 : 18,468.05 = 8,342.40 : x
  2. Step 2: Convert to fraction form
    13,376.15/18,468.05 = 8,342.40/x
  3. Step 3: Cross multiply
    13,376.15x = 18,468.05 × 8,342.40
  4. Step 4: Simplify right side
    13,376.15x = 154,067,860.32
  5. Step 5: Solve for x
    x = 154,067,860.32/13,376.15
  6. Step 6: Final answer
    x = 11,518.10

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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.