Home / 21,288.24-29,373.66-11,856.78

Finding the Fourth Proportional to 21,288.24, 29,373.66 and 11,856.78

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Solution

The fourth proportional to 21,288.24, 29,373.66 and 11,856.78 is: 16,360.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.24 : 29,373.66 = 11,856.78 : x
  2. Step 2: Convert to fraction form
    21,288.24/29,373.66 = 11,856.78/x
  3. Step 3: Cross multiply
    21,288.24x = 29,373.66 × 11,856.78
  4. Step 4: Simplify right side
    21,288.24x = 348,277,024.41
  5. Step 5: Solve for x
    x = 348,277,024.41/21,288.24
  6. Step 6: Final answer
    x = 16,360.07

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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.