Home / 21,037.80-31,551.28-6,243.20

Finding the Fourth Proportional to 21,037.80, 31,551.28 and 6,243.20

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Solution

The fourth proportional to 21,037.80, 31,551.28 and 6,243.20 is: 9,363.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.80 : 31,551.28 = 6,243.20 : x
  2. Step 2: Convert to fraction form
    21,037.80/31,551.28 = 6,243.20/x
  3. Step 3: Cross multiply
    21,037.80x = 31,551.28 × 6,243.20
  4. Step 4: Simplify right side
    21,037.80x = 196,980,951.30
  5. Step 5: Solve for x
    x = 196,980,951.30/21,037.80
  6. Step 6: Final answer
    x = 9,363.19

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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.