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Finding the Fourth Proportional to 13,352.40, 20,077.20 and 13,060.80

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Solution

The fourth proportional to 13,352.40, 20,077.20 and 13,060.80 is: 19,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,352.40 : 20,077.20 = 13,060.80 : x
  2. Step 2: Convert to fraction form
    13,352.40/20,077.20 = 13,060.80/x
  3. Step 3: Cross multiply
    13,352.40x = 20,077.20 × 13,060.80
  4. Step 4: Simplify right side
    13,352.40x = 262,224,293.76
  5. Step 5: Solve for x
    x = 262,224,293.76/13,352.40
  6. Step 6: Final answer
    x = 19,638.74

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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.