Home / 18,342.30-27,513.45-12,812.70

Finding the Fourth Proportional to 18,342.30, 27,513.45 and 12,812.70

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Solution

The fourth proportional to 18,342.30, 27,513.45 and 12,812.70 is: 19,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.30 : 27,513.45 = 12,812.70 : x
  2. Step 2: Convert to fraction form
    18,342.30/27,513.45 = 12,812.70/x
  3. Step 3: Cross multiply
    18,342.30x = 27,513.45 × 12,812.70
  4. Step 4: Simplify right side
    18,342.30x = 352,521,580.82
  5. Step 5: Solve for x
    x = 352,521,580.82/18,342.30
  6. Step 6: Final answer
    x = 19,219.05

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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.