Home / 13,209.51-19,815.48-4,778.12

Finding the Fourth Proportional to 13,209.51, 19,815.48 and 4,778.12

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Solution

The fourth proportional to 13,209.51, 19,815.48 and 4,778.12 is: 7,167.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.51 : 19,815.48 = 4,778.12 : x
  2. Step 2: Convert to fraction form
    13,209.51/19,815.48 = 4,778.12/x
  3. Step 3: Cross multiply
    13,209.51x = 19,815.48 × 4,778.12
  4. Step 4: Simplify right side
    13,209.51x = 94,680,734.45
  5. Step 5: Solve for x
    x = 94,680,734.45/13,209.51
  6. Step 6: Final answer
    x = 7,167.62

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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.