Home / 15,522.95-21,421.37-8,449.22

Finding the Fourth Proportional to 15,522.95, 21,421.37 and 8,449.22

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Solution

The fourth proportional to 15,522.95, 21,421.37 and 8,449.22 is: 11,659.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.95 : 21,421.37 = 8,449.22 : x
  2. Step 2: Convert to fraction form
    15,522.95/21,421.37 = 8,449.22/x
  3. Step 3: Cross multiply
    15,522.95x = 21,421.37 × 8,449.22
  4. Step 4: Simplify right side
    15,522.95x = 180,993,718.48
  5. Step 5: Solve for x
    x = 180,993,718.48/15,522.95
  6. Step 6: Final answer
    x = 11,659.75

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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.