Home / 15,790.76-21,786.18-10,486.64

Finding the Fourth Proportional to 15,790.76, 21,786.18 and 10,486.64

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Solution

The fourth proportional to 15,790.76, 21,786.18 and 10,486.64 is: 14,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,790.76 : 21,786.18 = 10,486.64 : x
  2. Step 2: Convert to fraction form
    15,790.76/21,786.18 = 10,486.64/x
  3. Step 3: Cross multiply
    15,790.76x = 21,786.18 × 10,486.64
  4. Step 4: Simplify right side
    15,790.76x = 228,463,826.64
  5. Step 5: Solve for x
    x = 228,463,826.64/15,790.76
  6. Step 6: Final answer
    x = 14,468.20

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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.