Home / 21,037.79-31,551.28-6,243.21

Finding the Fourth Proportional to 21,037.79, 31,551.28 and 6,243.21

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Solution

The fourth proportional to 21,037.79, 31,551.28 and 6,243.21 is: 9,363.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.79 : 31,551.28 = 6,243.21 : x
  2. Step 2: Convert to fraction form
    21,037.79/31,551.28 = 6,243.21/x
  3. Step 3: Cross multiply
    21,037.79x = 31,551.28 × 6,243.21
  4. Step 4: Simplify right side
    21,037.79x = 196,981,266.81
  5. Step 5: Solve for x
    x = 196,981,266.81/21,037.79
  6. Step 6: Final answer
    x = 9,363.21

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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.