Home / 21,331.39-29,437.23-11,899.94

Finding the Fourth Proportional to 21,331.39, 29,437.23 and 11,899.94

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Solution

The fourth proportional to 21,331.39, 29,437.23 and 11,899.94 is: 16,421.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.39 : 29,437.23 = 11,899.94 : x
  2. Step 2: Convert to fraction form
    21,331.39/29,437.23 = 11,899.94/x
  3. Step 3: Cross multiply
    21,331.39x = 29,437.23 × 11,899.94
  4. Step 4: Simplify right side
    21,331.39x = 350,301,270.77
  5. Step 5: Solve for x
    x = 350,301,270.77/21,331.39
  6. Step 6: Final answer
    x = 16,421.87

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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.