Home / 27,478.73-37,920.20-15,541.62

Finding the Fourth Proportional to 27,478.73, 37,920.20 and 15,541.62

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Solution

The fourth proportional to 27,478.73, 37,920.20 and 15,541.62 is: 21,447.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,478.73 : 37,920.20 = 15,541.62 : x
  2. Step 2: Convert to fraction form
    27,478.73/37,920.20 = 15,541.62/x
  3. Step 3: Cross multiply
    27,478.73x = 37,920.20 × 15,541.62
  4. Step 4: Simplify right side
    27,478.73x = 589,341,338.72
  5. Step 5: Solve for x
    x = 589,341,338.72/27,478.73
  6. Step 6: Final answer
    x = 21,447.18

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1.5x scale

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.