Home / 21,000.74-31,499.36-6,956.18

Finding the Fourth Proportional to 21,000.74, 31,499.36 and 6,956.18

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Solution

The fourth proportional to 21,000.74, 31,499.36 and 6,956.18 is: 10,433.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.74 : 31,499.36 = 6,956.18 : x
  2. Step 2: Convert to fraction form
    21,000.74/31,499.36 = 6,956.18/x
  3. Step 3: Cross multiply
    21,000.74x = 31,499.36 × 6,956.18
  4. Step 4: Simplify right side
    21,000.74x = 219,115,150.41
  5. Step 5: Solve for x
    x = 219,115,150.41/21,000.74
  6. Step 6: Final answer
    x = 10,433.69

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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.