Home / 17,685.29-26,541.57-12,138.50

Finding the Fourth Proportional to 17,685.29, 26,541.57 and 12,138.50

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Solution

The fourth proportional to 17,685.29, 26,541.57 and 12,138.50 is: 18,217.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,685.29 : 26,541.57 = 12,138.50 : x
  2. Step 2: Convert to fraction form
    17,685.29/26,541.57 = 12,138.50/x
  3. Step 3: Cross multiply
    17,685.29x = 26,541.57 × 12,138.50
  4. Step 4: Simplify right side
    17,685.29x = 322,174,847.45
  5. Step 5: Solve for x
    x = 322,174,847.45/17,685.29
  6. Step 6: Final answer
    x = 18,217.11

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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.