Home / 15,261.12-21,035.68-10,777.72

Finding the Fourth Proportional to 15,261.12, 21,035.68 and 10,777.72

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Solution

The fourth proportional to 15,261.12, 21,035.68 and 10,777.72 is: 14,855.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,261.12 : 21,035.68 = 10,777.72 : x
  2. Step 2: Convert to fraction form
    15,261.12/21,035.68 = 10,777.72/x
  3. Step 3: Cross multiply
    15,261.12x = 21,035.68 × 10,777.72
  4. Step 4: Simplify right side
    15,261.12x = 226,716,669.05
  5. Step 5: Solve for x
    x = 226,716,669.05/15,261.12
  6. Step 6: Final answer
    x = 14,855.83

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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.