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Finding the Fourth Proportional to 13,256.80, 19,856.40 and 8,053.60

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Solution

The fourth proportional to 13,256.80, 19,856.40 and 8,053.60 is: 12,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,256.80 : 19,856.40 = 8,053.60 : x
  2. Step 2: Convert to fraction form
    13,256.80/19,856.40 = 8,053.60/x
  3. Step 3: Cross multiply
    13,256.80x = 19,856.40 × 8,053.60
  4. Step 4: Simplify right side
    13,256.80x = 159,915,503.04
  5. Step 5: Solve for x
    x = 159,915,503.04/13,256.80
  6. Step 6: Final answer
    x = 12,062.90

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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.