Home / 13,154.20-19,730.40-4,269.40

Finding the Fourth Proportional to 13,154.20, 19,730.40 and 4,269.40

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Solution

The fourth proportional to 13,154.20, 19,730.40 and 4,269.40 is: 6,403.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.20 : 19,730.40 = 4,269.40 : x
  2. Step 2: Convert to fraction form
    13,154.20/19,730.40 = 4,269.40/x
  3. Step 3: Cross multiply
    13,154.20x = 19,730.40 × 4,269.40
  4. Step 4: Simplify right side
    13,154.20x = 84,236,969.76
  5. Step 5: Solve for x
    x = 84,236,969.76/13,154.20
  6. Step 6: Final answer
    x = 6,403.81

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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.