Home / 21,658.02-29,885.90-12,097.12

Finding the Fourth Proportional to 21,658.02, 29,885.90 and 12,097.12

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Solution

The fourth proportional to 21,658.02, 29,885.90 and 12,097.12 is: 16,692.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.02 : 29,885.90 = 12,097.12 : x
  2. Step 2: Convert to fraction form
    21,658.02/29,885.90 = 12,097.12/x
  3. Step 3: Cross multiply
    21,658.02x = 29,885.90 × 12,097.12
  4. Step 4: Simplify right side
    21,658.02x = 361,533,318.61
  5. Step 5: Solve for x
    x = 361,533,318.61/21,658.02
  6. Step 6: Final answer
    x = 16,692.81

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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.