Home / 13,126.68-18,104.58-8,411.40

Finding the Fourth Proportional to 13,126.68, 18,104.58 and 8,411.40

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Solution

The fourth proportional to 13,126.68, 18,104.58 and 8,411.40 is: 11,601.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.68 : 18,104.58 = 8,411.40 : x
  2. Step 2: Convert to fraction form
    13,126.68/18,104.58 = 8,411.40/x
  3. Step 3: Cross multiply
    13,126.68x = 18,104.58 × 8,411.40
  4. Step 4: Simplify right side
    13,126.68x = 152,284,864.21
  5. Step 5: Solve for x
    x = 152,284,864.21/13,126.68
  6. Step 6: Final answer
    x = 11,601.17

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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.