Home / 21,402.63-29,535.57-11,971.17

Finding the Fourth Proportional to 21,402.63, 29,535.57 and 11,971.17

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Solution

The fourth proportional to 21,402.63, 29,535.57 and 11,971.17 is: 16,520.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.63 : 29,535.57 = 11,971.17 : x
  2. Step 2: Convert to fraction form
    21,402.63/29,535.57 = 11,971.17/x
  3. Step 3: Cross multiply
    21,402.63x = 29,535.57 × 11,971.17
  4. Step 4: Simplify right side
    21,402.63x = 353,575,329.52
  5. Step 5: Solve for x
    x = 353,575,329.52/21,402.63
  6. Step 6: Final answer
    x = 16,520.18

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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.