Home / 11,315.29-15,614.56-6,279.45

Finding the Fourth Proportional to 11,315.29, 15,614.56 and 6,279.45

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Solution

The fourth proportional to 11,315.29, 15,614.56 and 6,279.45 is: 8,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.29 : 15,614.56 = 6,279.45 : x
  2. Step 2: Convert to fraction form
    11,315.29/15,614.56 = 6,279.45/x
  3. Step 3: Cross multiply
    11,315.29x = 15,614.56 × 6,279.45
  4. Step 4: Simplify right side
    11,315.29x = 98,050,848.79
  5. Step 5: Solve for x
    x = 98,050,848.79/11,315.29
  6. Step 6: Final answer
    x = 8,665.34

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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.