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Finding the Fourth Proportional to 15,030.27, 20,738.55 and 8,739.27

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Solution

The fourth proportional to 15,030.27, 20,738.55 and 8,739.27 is: 12,058.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.27 : 20,738.55 = 8,739.27 : x
  2. Step 2: Convert to fraction form
    15,030.27/20,738.55 = 8,739.27/x
  3. Step 3: Cross multiply
    15,030.27x = 20,738.55 × 8,739.27
  4. Step 4: Simplify right side
    15,030.27x = 181,239,787.86
  5. Step 5: Solve for x
    x = 181,239,787.86/15,030.27
  6. Step 6: Final answer
    x = 12,058.32

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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.