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Finding the Fourth Proportional to 27,480, 37,922.41 and 15,543.08

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Solution

The fourth proportional to 27,480, 37,922.41 and 15,543.08 is: 21,449.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,480 : 37,922.41 = 15,543.08 : x
  2. Step 2: Convert to fraction form
    27,480/37,922.41 = 15,543.08/x
  3. Step 3: Cross multiply
    27,480x = 37,922.41 × 15,543.08
  4. Step 4: Simplify right side
    27,480x = 589,430,974.71
  5. Step 5: Solve for x
    x = 589,430,974.71/27,480
  6. Step 6: Final answer
    x = 21,449.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.