Home / 23,172.32-31,977.78-12,561.86

Finding the Fourth Proportional to 23,172.32, 31,977.78 and 12,561.86

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Solution

The fourth proportional to 23,172.32, 31,977.78 and 12,561.86 is: 17,335.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,172.32 : 31,977.78 = 12,561.86 : x
  2. Step 2: Convert to fraction form
    23,172.32/31,977.78 = 12,561.86/x
  3. Step 3: Cross multiply
    23,172.32x = 31,977.78 × 12,561.86
  4. Step 4: Simplify right side
    23,172.32x = 401,700,395.47
  5. Step 5: Solve for x
    x = 401,700,395.47/23,172.32
  6. Step 6: Final answer
    x = 17,335.36

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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.