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Finding the Fourth Proportional to 18,443.23, 27,653.00 and 7,920.11

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Solution

The fourth proportional to 18,443.23, 27,653.00 and 7,920.11 is: 11,875.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443.23 : 27,653.00 = 7,920.11 : x
  2. Step 2: Convert to fraction form
    18,443.23/27,653.00 = 7,920.11/x
  3. Step 3: Cross multiply
    18,443.23x = 27,653.00 × 7,920.11
  4. Step 4: Simplify right side
    18,443.23x = 219,014,831.36
  5. Step 5: Solve for x
    x = 219,014,831.36/18,443.23
  6. Step 6: Final answer
    x = 11,875.08

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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.