Home / 12,247.72-16,909.95-10,919.11

Finding the Fourth Proportional to 12,247.72, 16,909.95 and 10,919.11

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Solution

The fourth proportional to 12,247.72, 16,909.95 and 10,919.11 is: 15,075.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.72 : 16,909.95 = 10,919.11 : x
  2. Step 2: Convert to fraction form
    12,247.72/16,909.95 = 10,919.11/x
  3. Step 3: Cross multiply
    12,247.72x = 16,909.95 × 10,919.11
  4. Step 4: Simplify right side
    12,247.72x = 184,641,604.14
  5. Step 5: Solve for x
    x = 184,641,604.14/12,247.72
  6. Step 6: Final answer
    x = 15,075.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.