Home / 13,581.17-18,742.81-7,614.77

Finding the Fourth Proportional to 13,581.17, 18,742.81 and 7,614.77

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Solution

The fourth proportional to 13,581.17, 18,742.81 and 7,614.77 is: 10,508.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.17 : 18,742.81 = 7,614.77 : x
  2. Step 2: Convert to fraction form
    13,581.17/18,742.81 = 7,614.77/x
  3. Step 3: Cross multiply
    13,581.17x = 18,742.81 × 7,614.77
  4. Step 4: Simplify right side
    13,581.17x = 142,722,088.83
  5. Step 5: Solve for x
    x = 142,722,088.83/13,581.17
  6. Step 6: Final answer
    x = 10,508.82

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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.