Home / 20,727.80-31,095.70-8,881.40

Finding the Fourth Proportional to 20,727.80, 31,095.70 and 8,881.40

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Solution

The fourth proportional to 20,727.80, 31,095.70 and 8,881.40 is: 13,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.80 : 31,095.70 = 8,881.40 : x
  2. Step 2: Convert to fraction form
    20,727.80/31,095.70 = 8,881.40/x
  3. Step 3: Cross multiply
    20,727.80x = 31,095.70 × 8,881.40
  4. Step 4: Simplify right side
    20,727.80x = 276,173,349.98
  5. Step 5: Solve for x
    x = 276,173,349.98/20,727.80
  6. Step 6: Final answer
    x = 13,323.81

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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.