Home / 13,948.08-20,903.13-7,698.78

Finding the Fourth Proportional to 13,948.08, 20,903.13 and 7,698.78

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Solution

The fourth proportional to 13,948.08, 20,903.13 and 7,698.78 is: 11,537.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,948.08 : 20,903.13 = 7,698.78 : x
  2. Step 2: Convert to fraction form
    13,948.08/20,903.13 = 7,698.78/x
  3. Step 3: Cross multiply
    13,948.08x = 20,903.13 × 7,698.78
  4. Step 4: Simplify right side
    13,948.08x = 160,928,599.18
  5. Step 5: Solve for x
    x = 160,928,599.18/13,948.08
  6. Step 6: Final answer
    x = 11,537.69

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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.