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Finding the Fourth Proportional to 21,053.90, 29,053.95 and 12,101.17

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Solution

The fourth proportional to 21,053.90, 29,053.95 and 12,101.17 is: 16,699.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.90 : 29,053.95 = 12,101.17 : x
  2. Step 2: Convert to fraction form
    21,053.90/29,053.95 = 12,101.17/x
  3. Step 3: Cross multiply
    21,053.90x = 29,053.95 × 12,101.17
  4. Step 4: Simplify right side
    21,053.90x = 351,586,788.12
  5. Step 5: Solve for x
    x = 351,586,788.12/21,053.90
  6. Step 6: Final answer
    x = 16,699.37

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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.