Home / 13,257.87-19,886.87-3,397.20

Finding the Fourth Proportional to 13,257.87, 19,886.87 and 3,397.20

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Solution

The fourth proportional to 13,257.87, 19,886.87 and 3,397.20 is: 5,095.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.87 : 19,886.87 = 3,397.20 : x
  2. Step 2: Convert to fraction form
    13,257.87/19,886.87 = 3,397.20/x
  3. Step 3: Cross multiply
    13,257.87x = 19,886.87 × 3,397.20
  4. Step 4: Simplify right side
    13,257.87x = 67,559,674.76
  5. Step 5: Solve for x
    x = 67,559,674.76/13,257.87
  6. Step 6: Final answer
    x = 5,095.82

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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.