Home / 21,122.06-29,155.73-12,173.13

Finding the Fourth Proportional to 21,122.06, 29,155.73 and 12,173.13

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Solution

The fourth proportional to 21,122.06, 29,155.73 and 12,173.13 is: 16,803.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.06 : 29,155.73 = 12,173.13 : x
  2. Step 2: Convert to fraction form
    21,122.06/29,155.73 = 12,173.13/x
  3. Step 3: Cross multiply
    21,122.06x = 29,155.73 × 12,173.13
  4. Step 4: Simplify right side
    21,122.06x = 354,916,491.53
  5. Step 5: Solve for x
    x = 354,916,491.53/21,122.06
  6. Step 6: Final answer
    x = 16,803.12

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Double scale
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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.