Home / 11,215.68-15,478.16-6,501.44

Finding the Fourth Proportional to 11,215.68, 15,478.16 and 6,501.44

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Solution

The fourth proportional to 11,215.68, 15,478.16 and 6,501.44 is: 8,972.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.68 : 15,478.16 = 6,501.44 : x
  2. Step 2: Convert to fraction form
    11,215.68/15,478.16 = 6,501.44/x
  3. Step 3: Cross multiply
    11,215.68x = 15,478.16 × 6,501.44
  4. Step 4: Simplify right side
    11,215.68x = 100,630,328.55
  5. Step 5: Solve for x
    x = 100,630,328.55/11,215.68
  6. Step 6: Final answer
    x = 8,972.29

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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.