Home / 27,916.01-38,520.86-15,978.63

Finding the Fourth Proportional to 27,916.01, 38,520.86 and 15,978.63

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Solution

The fourth proportional to 27,916.01, 38,520.86 and 15,978.63 is: 22,048.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,916.01 : 38,520.86 = 15,978.63 : x
  2. Step 2: Convert to fraction form
    27,916.01/38,520.86 = 15,978.63/x
  3. Step 3: Cross multiply
    27,916.01x = 38,520.86 × 15,978.63
  4. Step 4: Simplify right side
    27,916.01x = 615,510,489.33
  5. Step 5: Solve for x
    x = 615,510,489.33/27,916.01
  6. Step 6: Final answer
    x = 22,048.66

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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.