Home / 13,990.32-20,975.21-6,590.61

Finding the Fourth Proportional to 13,990.32, 20,975.21 and 6,590.61

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Solution

The fourth proportional to 13,990.32, 20,975.21 and 6,590.61 is: 9,881.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.32 : 20,975.21 = 6,590.61 : x
  2. Step 2: Convert to fraction form
    13,990.32/20,975.21 = 6,590.61/x
  3. Step 3: Cross multiply
    13,990.32x = 20,975.21 × 6,590.61
  4. Step 4: Simplify right side
    13,990.32x = 138,239,395.83
  5. Step 5: Solve for x
    x = 138,239,395.83/13,990.32
  6. Step 6: Final answer
    x = 9,881.07

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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.