Home / 21,031.84-31,544.42-6,990.69

Finding the Fourth Proportional to 21,031.84, 31,544.42 and 6,990.69

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Solution

The fourth proportional to 21,031.84, 31,544.42 and 6,990.69 is: 10,484.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.84 : 31,544.42 = 6,990.69 : x
  2. Step 2: Convert to fraction form
    21,031.84/31,544.42 = 6,990.69/x
  3. Step 3: Cross multiply
    21,031.84x = 31,544.42 × 6,990.69
  4. Step 4: Simplify right side
    21,031.84x = 220,517,305.36
  5. Step 5: Solve for x
    x = 220,517,305.36/21,031.84
  6. Step 6: Final answer
    x = 10,484.93

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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.