Home / 11,157.61-15,397.67-6,378.55

Finding the Fourth Proportional to 11,157.61, 15,397.67 and 6,378.55

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Solution

The fourth proportional to 11,157.61, 15,397.67 and 6,378.55 is: 8,802.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.61 : 15,397.67 = 6,378.55 : x
  2. Step 2: Convert to fraction form
    11,157.61/15,397.67 = 6,378.55/x
  3. Step 3: Cross multiply
    11,157.61x = 15,397.67 × 6,378.55
  4. Step 4: Simplify right side
    11,157.61x = 98,214,776.09
  5. Step 5: Solve for x
    x = 98,214,776.09/11,157.61
  6. Step 6: Final answer
    x = 8,802.49

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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.