Home / 18,349.92-25,330.64-12,389.66

Finding the Fourth Proportional to 18,349.92, 25,330.64 and 12,389.66

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Solution

The fourth proportional to 18,349.92, 25,330.64 and 12,389.66 is: 17,102.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,349.92 : 25,330.64 = 12,389.66 : x
  2. Step 2: Convert to fraction form
    18,349.92/25,330.64 = 12,389.66/x
  3. Step 3: Cross multiply
    18,349.92x = 25,330.64 × 12,389.66
  4. Step 4: Simplify right side
    18,349.92x = 313,837,828.58
  5. Step 5: Solve for x
    x = 313,837,828.58/18,349.92
  6. Step 6: Final answer
    x = 17,102.95

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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.