Home / 15,405.03-21,252.68-11,381.43

Finding the Fourth Proportional to 15,405.03, 21,252.68 and 11,381.43

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Solution

The fourth proportional to 15,405.03, 21,252.68 and 11,381.43 is: 15,701.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.03 : 21,252.68 = 11,381.43 : x
  2. Step 2: Convert to fraction form
    15,405.03/21,252.68 = 11,381.43/x
  3. Step 3: Cross multiply
    15,405.03x = 21,252.68 × 11,381.43
  4. Step 4: Simplify right side
    15,405.03x = 241,885,832.83
  5. Step 5: Solve for x
    x = 241,885,832.83/15,405.03
  6. Step 6: Final answer
    x = 15,701.74

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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.