Home / 21,693.93-29,939.09-12,134.70

Finding the Fourth Proportional to 21,693.93, 29,939.09 and 12,134.70

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Solution

The fourth proportional to 21,693.93, 29,939.09 and 12,134.70 is: 16,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,693.93 : 29,939.09 = 12,134.70 : x
  2. Step 2: Convert to fraction form
    21,693.93/29,939.09 = 12,134.70/x
  3. Step 3: Cross multiply
    21,693.93x = 29,939.09 × 12,134.70
  4. Step 4: Simplify right side
    21,693.93x = 363,301,814.75
  5. Step 5: Solve for x
    x = 363,301,814.75/21,693.93
  6. Step 6: Final answer
    x = 16,746.70

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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.