Home / 13,740.32-18,951.62-8,705.36

Finding the Fourth Proportional to 13,740.32, 18,951.62 and 8,705.36

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Solution

The fourth proportional to 13,740.32, 18,951.62 and 8,705.36 is: 12,007.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.32 : 18,951.62 = 8,705.36 : x
  2. Step 2: Convert to fraction form
    13,740.32/18,951.62 = 8,705.36/x
  3. Step 3: Cross multiply
    13,740.32x = 18,951.62 × 8,705.36
  4. Step 4: Simplify right side
    13,740.32x = 164,980,674.68
  5. Step 5: Solve for x
    x = 164,980,674.68/13,740.32
  6. Step 6: Final answer
    x = 12,007.05

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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.