Home / 12,415.11-18,612.18-5,389.83

Finding the Fourth Proportional to 12,415.11, 18,612.18 and 5,389.83

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Solution

The fourth proportional to 12,415.11, 18,612.18 and 5,389.83 is: 8,080.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.11 : 18,612.18 = 5,389.83 : x
  2. Step 2: Convert to fraction form
    12,415.11/18,612.18 = 5,389.83/x
  3. Step 3: Cross multiply
    12,415.11x = 18,612.18 × 5,389.83
  4. Step 4: Simplify right side
    12,415.11x = 100,316,486.13
  5. Step 5: Solve for x
    x = 100,316,486.13/12,415.11
  6. Step 6: Final answer
    x = 8,080.19

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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.