Home / 21,208.95-29,269.25-11,777.50

Finding the Fourth Proportional to 21,208.95, 29,269.25 and 11,777.50

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Solution

The fourth proportional to 21,208.95, 29,269.25 and 11,777.50 is: 16,253.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.95 : 29,269.25 = 11,777.50 : x
  2. Step 2: Convert to fraction form
    21,208.95/29,269.25 = 11,777.50/x
  3. Step 3: Cross multiply
    21,208.95x = 29,269.25 × 11,777.50
  4. Step 4: Simplify right side
    21,208.95x = 344,718,591.88
  5. Step 5: Solve for x
    x = 344,718,591.88/21,208.95
  6. Step 6: Final answer
    x = 16,253.45

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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.