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Finding the Fourth Proportional to 18,275.68, 27,426.48 and 7,881.76

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Solution

The fourth proportional to 18,275.68, 27,426.48 and 7,881.76 is: 11,828.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.68 : 27,426.48 = 7,881.76 : x
  2. Step 2: Convert to fraction form
    18,275.68/27,426.48 = 7,881.76/x
  3. Step 3: Cross multiply
    18,275.68x = 27,426.48 × 7,881.76
  4. Step 4: Simplify right side
    18,275.68x = 216,168,933.00
  5. Step 5: Solve for x
    x = 216,168,933.00/18,275.68
  6. Step 6: Final answer
    x = 11,828.23

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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.