Home / 13,610.68-18,776.54-9,129.76

Finding the Fourth Proportional to 13,610.68, 18,776.54 and 9,129.76

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Solution

The fourth proportional to 13,610.68, 18,776.54 and 9,129.76 is: 12,594.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.68 : 18,776.54 = 9,129.76 : x
  2. Step 2: Convert to fraction form
    13,610.68/18,776.54 = 9,129.76/x
  3. Step 3: Cross multiply
    13,610.68x = 18,776.54 × 9,129.76
  4. Step 4: Simplify right side
    13,610.68x = 171,425,303.83
  5. Step 5: Solve for x
    x = 171,425,303.83/13,610.68
  6. Step 6: Final answer
    x = 12,594.91

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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.