Home / 21,281.72-29,368.98-11,850.49

Finding the Fourth Proportional to 21,281.72, 29,368.98 and 11,850.49

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Solution

The fourth proportional to 21,281.72, 29,368.98 and 11,850.49 is: 16,353.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.72 : 29,368.98 = 11,850.49 : x
  2. Step 2: Convert to fraction form
    21,281.72/29,368.98 = 11,850.49/x
  3. Step 3: Cross multiply
    21,281.72x = 29,368.98 × 11,850.49
  4. Step 4: Simplify right side
    21,281.72x = 348,036,803.80
  5. Step 5: Solve for x
    x = 348,036,803.80/21,281.72
  6. Step 6: Final answer
    x = 16,353.79

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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.