Home / 12,153.02-16,661.78-11,931.58

Finding the Fourth Proportional to 12,153.02, 16,661.78 and 11,931.58

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Solution

The fourth proportional to 12,153.02, 16,661.78 and 11,931.58 is: 16,358.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153.02 : 16,661.78 = 11,931.58 : x
  2. Step 2: Convert to fraction form
    12,153.02/16,661.78 = 11,931.58/x
  3. Step 3: Cross multiply
    12,153.02x = 16,661.78 × 11,931.58
  4. Step 4: Simplify right side
    12,153.02x = 198,801,361.01
  5. Step 5: Solve for x
    x = 198,801,361.01/12,153.02
  6. Step 6: Final answer
    x = 16,358.19

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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.