Home / 15,550.12-21,459.74-8,836.88

Finding the Fourth Proportional to 15,550.12, 21,459.74 and 8,836.88

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Solution

The fourth proportional to 15,550.12, 21,459.74 and 8,836.88 is: 12,195.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,550.12 : 21,459.74 = 8,836.88 : x
  2. Step 2: Convert to fraction form
    15,550.12/21,459.74 = 8,836.88/x
  3. Step 3: Cross multiply
    15,550.12x = 21,459.74 × 8,836.88
  4. Step 4: Simplify right side
    15,550.12x = 189,637,147.21
  5. Step 5: Solve for x
    x = 189,637,147.21/15,550.12
  6. Step 6: Final answer
    x = 12,195.22

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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.