Home / 13,267.20-19,915.20-8,342.40

Finding the Fourth Proportional to 13,267.20, 19,915.20 and 8,342.40

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Solution

The fourth proportional to 13,267.20, 19,915.20 and 8,342.40 is: 12,522.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,267.20 : 19,915.20 = 8,342.40 : x
  2. Step 2: Convert to fraction form
    13,267.20/19,915.20 = 8,342.40/x
  3. Step 3: Cross multiply
    13,267.20x = 19,915.20 × 8,342.40
  4. Step 4: Simplify right side
    13,267.20x = 166,140,564.48
  5. Step 5: Solve for x
    x = 166,140,564.48/13,267.20
  6. Step 6: Final answer
    x = 12,522.65

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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.