Home / 21,284.60-29,373.18-12,335

Finding the Fourth Proportional to 21,284.60, 29,373.18 and 12,335

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Solution

The fourth proportional to 21,284.60, 29,373.18 and 12,335 is: 17,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.60 : 29,373.18 = 12,335 : x
  2. Step 2: Convert to fraction form
    21,284.60/29,373.18 = 12,335/x
  3. Step 3: Cross multiply
    21,284.60x = 29,373.18 × 12,335
  4. Step 4: Simplify right side
    21,284.60x = 362,318,175.30
  5. Step 5: Solve for x
    x = 362,318,175.30/21,284.60
  6. Step 6: Final answer
    x = 17,022.55

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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.