Home / 12,509.68-17,191.10-11,931.46

Finding the Fourth Proportional to 12,509.68, 17,191.10 and 11,931.46

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Solution

The fourth proportional to 12,509.68, 17,191.10 and 11,931.46 is: 16,396.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,509.68 : 17,191.10 = 11,931.46 : x
  2. Step 2: Convert to fraction form
    12,509.68/17,191.10 = 11,931.46/x
  3. Step 3: Cross multiply
    12,509.68x = 17,191.10 × 11,931.46
  4. Step 4: Simplify right side
    12,509.68x = 205,114,879.03
  5. Step 5: Solve for x
    x = 205,114,879.03/12,509.68
  6. Step 6: Final answer
    x = 16,396.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.