Home / 15,563.12-21,477.09-8,489.53

Finding the Fourth Proportional to 15,563.12, 21,477.09 and 8,489.53

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Solution

The fourth proportional to 15,563.12, 21,477.09 and 8,489.53 is: 11,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,563.12 : 21,477.09 = 8,489.53 : x
  2. Step 2: Convert to fraction form
    15,563.12/21,477.09 = 8,489.53/x
  3. Step 3: Cross multiply
    15,563.12x = 21,477.09 × 8,489.53
  4. Step 4: Simplify right side
    15,563.12x = 182,330,458.55
  5. Step 5: Solve for x
    x = 182,330,458.55/15,563.12
  6. Step 6: Final answer
    x = 11,715.55

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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.