Home / 21,402.36-29,535.84-11,842.74

Finding the Fourth Proportional to 21,402.36, 29,535.84 and 11,842.74

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Solution

The fourth proportional to 21,402.36, 29,535.84 and 11,842.74 is: 16,343.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.36 : 29,535.84 = 11,842.74 : x
  2. Step 2: Convert to fraction form
    21,402.36/29,535.84 = 11,842.74/x
  3. Step 3: Cross multiply
    21,402.36x = 29,535.84 × 11,842.74
  4. Step 4: Simplify right side
    21,402.36x = 349,785,273.80
  5. Step 5: Solve for x
    x = 349,785,273.80/21,402.36
  6. Step 6: Final answer
    x = 16,343.30

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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.