Home / 21,219.29-29,282.50-11,528.66

Finding the Fourth Proportional to 21,219.29, 29,282.50 and 11,528.66

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Solution

The fourth proportional to 21,219.29, 29,282.50 and 11,528.66 is: 15,909.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.29 : 29,282.50 = 11,528.66 : x
  2. Step 2: Convert to fraction form
    21,219.29/29,282.50 = 11,528.66/x
  3. Step 3: Cross multiply
    21,219.29x = 29,282.50 × 11,528.66
  4. Step 4: Simplify right side
    21,219.29x = 337,588,074.07
  5. Step 5: Solve for x
    x = 337,588,074.07/21,219.29
  6. Step 6: Final answer
    x = 15,909.49

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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.