Home / 20,740.43-31,118.07-8,889.23

Finding the Fourth Proportional to 20,740.43, 31,118.07 and 8,889.23

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Solution

The fourth proportional to 20,740.43, 31,118.07 and 8,889.23 is: 13,337.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.43 : 31,118.07 = 8,889.23 : x
  2. Step 2: Convert to fraction form
    20,740.43/31,118.07 = 8,889.23/x
  3. Step 3: Cross multiply
    20,740.43x = 31,118.07 × 8,889.23
  4. Step 4: Simplify right side
    20,740.43x = 276,615,681.39
  5. Step 5: Solve for x
    x = 276,615,681.39/20,740.43
  6. Step 6: Final answer
    x = 13,337.03

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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.