Home / 13,157.20-19,734.90-4,272.40

Finding the Fourth Proportional to 13,157.20, 19,734.90 and 4,272.40

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Solution

The fourth proportional to 13,157.20, 19,734.90 and 4,272.40 is: 6,408.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.20 : 19,734.90 = 4,272.40 : x
  2. Step 2: Convert to fraction form
    13,157.20/19,734.90 = 4,272.40/x
  3. Step 3: Cross multiply
    13,157.20x = 19,734.90 × 4,272.40
  4. Step 4: Simplify right side
    13,157.20x = 84,315,386.76
  5. Step 5: Solve for x
    x = 84,315,386.76/13,157.20
  6. Step 6: Final answer
    x = 6,408.31

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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.