Home / 13,264.72-19,775.06-12,642.64

Finding the Fourth Proportional to 13,264.72, 19,775.06 and 12,642.64

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Solution

The fourth proportional to 13,264.72, 19,775.06 and 12,642.64 is: 18,847.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,264.72 : 19,775.06 = 12,642.64 : x
  2. Step 2: Convert to fraction form
    13,264.72/19,775.06 = 12,642.64/x
  3. Step 3: Cross multiply
    13,264.72x = 19,775.06 × 12,642.64
  4. Step 4: Simplify right side
    13,264.72x = 250,008,964.56
  5. Step 5: Solve for x
    x = 250,008,964.56/13,264.72
  6. Step 6: Final answer
    x = 18,847.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.