Home / 21,306.87-29,404.77-11,746.71

Finding the Fourth Proportional to 21,306.87, 29,404.77 and 11,746.71

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Solution

The fourth proportional to 21,306.87, 29,404.77 and 11,746.71 is: 16,211.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.87 : 29,404.77 = 11,746.71 : x
  2. Step 2: Convert to fraction form
    21,306.87/29,404.77 = 11,746.71/x
  3. Step 3: Cross multiply
    21,306.87x = 29,404.77 × 11,746.71
  4. Step 4: Simplify right side
    21,306.87x = 345,409,305.81
  5. Step 5: Solve for x
    x = 345,409,305.81/21,306.87
  6. Step 6: Final answer
    x = 16,211.17

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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.