Home / 15,950.12-21,988.34-11,219.72

Finding the Fourth Proportional to 15,950.12, 21,988.34 and 11,219.72

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Solution

The fourth proportional to 15,950.12, 21,988.34 and 11,219.72 is: 15,467.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,950.12 : 21,988.34 = 11,219.72 : x
  2. Step 2: Convert to fraction form
    15,950.12/21,988.34 = 11,219.72/x
  3. Step 3: Cross multiply
    15,950.12x = 21,988.34 × 11,219.72
  4. Step 4: Simplify right side
    15,950.12x = 246,702,852.02
  5. Step 5: Solve for x
    x = 246,702,852.02/15,950.12
  6. Step 6: Final answer
    x = 15,467.15

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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.