Home / 20,248.40-30,356.76-9,857.36

Finding the Fourth Proportional to 20,248.40, 30,356.76 and 9,857.36

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Solution

The fourth proportional to 20,248.40, 30,356.76 and 9,857.36 is: 14,778.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,248.40 : 30,356.76 = 9,857.36 : x
  2. Step 2: Convert to fraction form
    20,248.40/30,356.76 = 9,857.36/x
  3. Step 3: Cross multiply
    20,248.40x = 30,356.76 × 9,857.36
  4. Step 4: Simplify right side
    20,248.40x = 299,237,511.75
  5. Step 5: Solve for x
    x = 299,237,511.75/20,248.40
  6. Step 6: Final answer
    x = 14,778.33

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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.