Home / 21,051.90-29,051.19-12,099.17

Finding the Fourth Proportional to 21,051.90, 29,051.19 and 12,099.17

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Solution

The fourth proportional to 21,051.90, 29,051.19 and 12,099.17 is: 16,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.90 : 29,051.19 = 12,099.17 : x
  2. Step 2: Convert to fraction form
    21,051.90/29,051.19 = 12,099.17/x
  3. Step 3: Cross multiply
    21,051.90x = 29,051.19 × 12,099.17
  4. Step 4: Simplify right side
    21,051.90x = 351,495,141.26
  5. Step 5: Solve for x
    x = 351,495,141.26/21,051.90
  6. Step 6: Final answer
    x = 16,696.60

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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.