Home / 21,600.68-29,798.74-12,642.64

Finding the Fourth Proportional to 21,600.68, 29,798.74 and 12,642.64

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Solution

The fourth proportional to 21,600.68, 29,798.74 and 12,642.64 is: 17,440.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.68 : 29,798.74 = 12,642.64 : x
  2. Step 2: Convert to fraction form
    21,600.68/29,798.74 = 12,642.64/x
  3. Step 3: Cross multiply
    21,600.68x = 29,798.74 × 12,642.64
  4. Step 4: Simplify right side
    21,600.68x = 376,734,742.27
  5. Step 5: Solve for x
    x = 376,734,742.27/21,600.68
  6. Step 6: Final answer
    x = 17,440.87

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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.