Home / 21,266.80-31,901.40-6,476.20

Finding the Fourth Proportional to 21,266.80, 31,901.40 and 6,476.20

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Solution

The fourth proportional to 21,266.80, 31,901.40 and 6,476.20 is: 9,714.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.80 : 31,901.40 = 6,476.20 : x
  2. Step 2: Convert to fraction form
    21,266.80/31,901.40 = 6,476.20/x
  3. Step 3: Cross multiply
    21,266.80x = 31,901.40 × 6,476.20
  4. Step 4: Simplify right side
    21,266.80x = 206,599,846.68
  5. Step 5: Solve for x
    x = 206,599,846.68/21,266.80
  6. Step 6: Final answer
    x = 9,714.67

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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.