Home / 10,979.76-15,148.32-6,260.64

Finding the Fourth Proportional to 10,979.76, 15,148.32 and 6,260.64

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Solution

The fourth proportional to 10,979.76, 15,148.32 and 6,260.64 is: 8,637.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.76 : 15,148.32 = 6,260.64 : x
  2. Step 2: Convert to fraction form
    10,979.76/15,148.32 = 6,260.64/x
  3. Step 3: Cross multiply
    10,979.76x = 15,148.32 × 6,260.64
  4. Step 4: Simplify right side
    10,979.76x = 94,838,178.12
  5. Step 5: Solve for x
    x = 94,838,178.12/10,979.76
  6. Step 6: Final answer
    x = 8,637.55

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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.