Home / 13,200.48-19,787.76-8,519.76

Finding the Fourth Proportional to 13,200.48, 19,787.76 and 8,519.76

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Solution

The fourth proportional to 13,200.48, 19,787.76 and 8,519.76 is: 12,771.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.48 : 19,787.76 = 8,519.76 : x
  2. Step 2: Convert to fraction form
    13,200.48/19,787.76 = 8,519.76/x
  3. Step 3: Cross multiply
    13,200.48x = 19,787.76 × 8,519.76
  4. Step 4: Simplify right side
    13,200.48x = 168,586,966.14
  5. Step 5: Solve for x
    x = 168,586,966.14/13,200.48
  6. Step 6: Final answer
    x = 12,771.28

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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.