Home / 15,108.29-20,848.28-8,393.79

Finding the Fourth Proportional to 15,108.29, 20,848.28 and 8,393.79

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Solution

The fourth proportional to 15,108.29, 20,848.28 and 8,393.79 is: 11,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,108.29 : 20,848.28 = 8,393.79 : x
  2. Step 2: Convert to fraction form
    15,108.29/20,848.28 = 8,393.79/x
  3. Step 3: Cross multiply
    15,108.29x = 20,848.28 × 8,393.79
  4. Step 4: Simplify right side
    15,108.29x = 174,996,042.21
  5. Step 5: Solve for x
    x = 174,996,042.21/15,108.29
  6. Step 6: Final answer
    x = 11,582.79

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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.