Home / 15,327.90-21,151.83-8,955.08

Finding the Fourth Proportional to 15,327.90, 21,151.83 and 8,955.08

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Solution

The fourth proportional to 15,327.90, 21,151.83 and 8,955.08 is: 12,357.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.90 : 21,151.83 = 8,955.08 : x
  2. Step 2: Convert to fraction form
    15,327.90/21,151.83 = 8,955.08/x
  3. Step 3: Cross multiply
    15,327.90x = 21,151.83 × 8,955.08
  4. Step 4: Simplify right side
    15,327.90x = 189,416,380.36
  5. Step 5: Solve for x
    x = 189,416,380.36/15,327.90
  6. Step 6: Final answer
    x = 12,357.62

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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.