Home / 12,305.17-18,460.69-3,985.19

Finding the Fourth Proportional to 12,305.17, 18,460.69 and 3,985.19

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Solution

The fourth proportional to 12,305.17, 18,460.69 and 3,985.19 is: 5,978.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.17 : 18,460.69 = 3,985.19 : x
  2. Step 2: Convert to fraction form
    12,305.17/18,460.69 = 3,985.19/x
  3. Step 3: Cross multiply
    12,305.17x = 18,460.69 × 3,985.19
  4. Step 4: Simplify right side
    12,305.17x = 73,569,357.18
  5. Step 5: Solve for x
    x = 73,569,357.18/12,305.17
  6. Step 6: Final answer
    x = 5,978.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.