Home / 21,588.02-29,786.28-12,156.58

Finding the Fourth Proportional to 21,588.02, 29,786.28 and 12,156.58

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Solution

The fourth proportional to 21,588.02, 29,786.28 and 12,156.58 is: 16,773.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,588.02 : 29,786.28 = 12,156.58 : x
  2. Step 2: Convert to fraction form
    21,588.02/29,786.28 = 12,156.58/x
  3. Step 3: Cross multiply
    21,588.02x = 29,786.28 × 12,156.58
  4. Step 4: Simplify right side
    21,588.02x = 362,099,355.75
  5. Step 5: Solve for x
    x = 362,099,355.75/21,588.02
  6. Step 6: Final answer
    x = 16,773.16

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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.