Home / 21,045.48-29,041.68-12,086.64

Finding the Fourth Proportional to 21,045.48, 29,041.68 and 12,086.64

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Solution

The fourth proportional to 21,045.48, 29,041.68 and 12,086.64 is: 16,678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.48 : 29,041.68 = 12,086.64 : x
  2. Step 2: Convert to fraction form
    21,045.48/29,041.68 = 12,086.64/x
  3. Step 3: Cross multiply
    21,045.48x = 29,041.68 × 12,086.64
  4. Step 4: Simplify right side
    21,045.48x = 351,016,331.16
  5. Step 5: Solve for x
    x = 351,016,331.16/21,045.48
  6. Step 6: Final answer
    x = 16,678.94

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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.