Home / 13,210.85-19,815.59-3,350.21

Finding the Fourth Proportional to 13,210.85, 19,815.59 and 3,350.21

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Solution

The fourth proportional to 13,210.85, 19,815.59 and 3,350.21 is: 5,025.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.85 : 19,815.59 = 3,350.21 : x
  2. Step 2: Convert to fraction form
    13,210.85/19,815.59 = 3,350.21/x
  3. Step 3: Cross multiply
    13,210.85x = 19,815.59 × 3,350.21
  4. Step 4: Simplify right side
    13,210.85x = 66,386,389.69
  5. Step 5: Solve for x
    x = 66,386,389.69/13,210.85
  6. Step 6: Final answer
    x = 5,025.14

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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.