Home / 21,031.49-31,535.41-6,984

Finding the Fourth Proportional to 21,031.49, 31,535.41 and 6,984

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Solution

The fourth proportional to 21,031.49, 31,535.41 and 6,984 is: 10,472.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.49 : 31,535.41 = 6,984 : x
  2. Step 2: Convert to fraction form
    21,031.49/31,535.41 = 6,984/x
  3. Step 3: Cross multiply
    21,031.49x = 31,535.41 × 6,984
  4. Step 4: Simplify right side
    21,031.49x = 220,243,303.44
  5. Step 5: Solve for x
    x = 220,243,303.44/21,031.49
  6. Step 6: Final answer
    x = 10,472.07

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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.