Home / 15,826.12-21,839.32-8,655.84

Finding the Fourth Proportional to 15,826.12, 21,839.32 and 8,655.84

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Solution

The fourth proportional to 15,826.12, 21,839.32 and 8,655.84 is: 11,944.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,826.12 : 21,839.32 = 8,655.84 : x
  2. Step 2: Convert to fraction form
    15,826.12/21,839.32 = 8,655.84/x
  3. Step 3: Cross multiply
    15,826.12x = 21,839.32 × 8,655.84
  4. Step 4: Simplify right side
    15,826.12x = 189,037,659.63
  5. Step 5: Solve for x
    x = 189,037,659.63/15,826.12
  6. Step 6: Final answer
    x = 11,944.66

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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.