Home / 21,487.75-29,652.33-11,927.40

Finding the Fourth Proportional to 21,487.75, 29,652.33 and 11,927.40

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Solution

The fourth proportional to 21,487.75, 29,652.33 and 11,927.40 is: 16,459.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.75 : 29,652.33 = 11,927.40 : x
  2. Step 2: Convert to fraction form
    21,487.75/29,652.33 = 11,927.40/x
  3. Step 3: Cross multiply
    21,487.75x = 29,652.33 × 11,927.40
  4. Step 4: Simplify right side
    21,487.75x = 353,675,200.84
  5. Step 5: Solve for x
    x = 353,675,200.84/21,487.75
  6. Step 6: Final answer
    x = 16,459.39

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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.