Home / 15,526.68-21,431.64-8,816.77

Finding the Fourth Proportional to 15,526.68, 21,431.64 and 8,816.77

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Solution

The fourth proportional to 15,526.68, 21,431.64 and 8,816.77 is: 12,169.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,526.68 : 21,431.64 = 8,816.77 : x
  2. Step 2: Convert to fraction form
    15,526.68/21,431.64 = 8,816.77/x
  3. Step 3: Cross multiply
    15,526.68x = 21,431.64 × 8,816.77
  4. Step 4: Simplify right side
    15,526.68x = 188,957,840.60
  5. Step 5: Solve for x
    x = 188,957,840.60/15,526.68
  6. Step 6: Final answer
    x = 12,169.88

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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.