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Finding the Fourth Proportional to 18,637.23, 27,955.71 and 7,543.76

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Solution

The fourth proportional to 18,637.23, 27,955.71 and 7,543.76 is: 11,315.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.23 : 27,955.71 = 7,543.76 : x
  2. Step 2: Convert to fraction form
    18,637.23/27,955.71 = 7,543.76/x
  3. Step 3: Cross multiply
    18,637.23x = 27,955.71 × 7,543.76
  4. Step 4: Simplify right side
    18,637.23x = 210,891,027.09
  5. Step 5: Solve for x
    x = 210,891,027.09/18,637.23
  6. Step 6: Final answer
    x = 11,315.58

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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.