Home / 21,599.55-29,807.24-12,171.15

Finding the Fourth Proportional to 21,599.55, 29,807.24 and 12,171.15

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Solution

The fourth proportional to 21,599.55, 29,807.24 and 12,171.15 is: 16,796.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,599.55 : 29,807.24 = 12,171.15 : x
  2. Step 2: Convert to fraction form
    21,599.55/29,807.24 = 12,171.15/x
  3. Step 3: Cross multiply
    21,599.55x = 29,807.24 × 12,171.15
  4. Step 4: Simplify right side
    21,599.55x = 362,788,389.13
  5. Step 5: Solve for x
    x = 362,788,389.13/21,599.55
  6. Step 6: Final answer
    x = 16,796.11

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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.