Home / 21,178.76-29,226.98-11,619.55

Finding the Fourth Proportional to 21,178.76, 29,226.98 and 11,619.55

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Solution

The fourth proportional to 21,178.76, 29,226.98 and 11,619.55 is: 16,035.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.76 : 29,226.98 = 11,619.55 : x
  2. Step 2: Convert to fraction form
    21,178.76/29,226.98 = 11,619.55/x
  3. Step 3: Cross multiply
    21,178.76x = 29,226.98 × 11,619.55
  4. Step 4: Simplify right side
    21,178.76x = 339,604,151.23
  5. Step 5: Solve for x
    x = 339,604,151.23/21,178.76
  6. Step 6: Final answer
    x = 16,035.13

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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.