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Finding the Fourth Proportional to 18,547.23, 27,839.07 and 13,602.79

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Solution

The fourth proportional to 18,547.23, 27,839.07 and 13,602.79 is: 20,417.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,547.23 : 27,839.07 = 13,602.79 : x
  2. Step 2: Convert to fraction form
    18,547.23/27,839.07 = 13,602.79/x
  3. Step 3: Cross multiply
    18,547.23x = 27,839.07 × 13,602.79
  4. Step 4: Simplify right side
    18,547.23x = 378,688,815.80
  5. Step 5: Solve for x
    x = 378,688,815.80/18,547.23
  6. Step 6: Final answer
    x = 20,417.54

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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.