Home / 11,345.28-15,657.28-6,630.08

Finding the Fourth Proportional to 11,345.28, 15,657.28 and 6,630.08

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Solution

The fourth proportional to 11,345.28, 15,657.28 and 6,630.08 is: 9,149.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,345.28 : 15,657.28 = 6,630.08 : x
  2. Step 2: Convert to fraction form
    11,345.28/15,657.28 = 6,630.08/x
  3. Step 3: Cross multiply
    11,345.28x = 15,657.28 × 6,630.08
  4. Step 4: Simplify right side
    11,345.28x = 103,809,018.98
  5. Step 5: Solve for x
    x = 103,809,018.98/11,345.28
  6. Step 6: Final answer
    x = 9,149.97

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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.