Home / 12,931.50-19,396.86-3,572.09

Finding the Fourth Proportional to 12,931.50, 19,396.86 and 3,572.09

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Solution

The fourth proportional to 12,931.50, 19,396.86 and 3,572.09 is: 5,358.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.50 : 19,396.86 = 3,572.09 : x
  2. Step 2: Convert to fraction form
    12,931.50/19,396.86 = 3,572.09/x
  3. Step 3: Cross multiply
    12,931.50x = 19,396.86 × 3,572.09
  4. Step 4: Simplify right side
    12,931.50x = 69,287,232.65
  5. Step 5: Solve for x
    x = 69,287,232.65/12,931.50
  6. Step 6: Final answer
    x = 5,358.02

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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.