Home / 9,881.45-13,636.08-5,405.16

Finding the Fourth Proportional to 9,881.45, 13,636.08 and 5,405.16

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Solution

The fourth proportional to 9,881.45, 13,636.08 and 5,405.16 is: 7,458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,881.45 : 13,636.08 = 5,405.16 : x
  2. Step 2: Convert to fraction form
    9,881.45/13,636.08 = 5,405.16/x
  3. Step 3: Cross multiply
    9,881.45x = 13,636.08 × 5,405.16
  4. Step 4: Simplify right side
    9,881.45x = 73,705,194.17
  5. Step 5: Solve for x
    x = 73,705,194.17/9,881.45
  6. Step 6: Final answer
    x = 7,458.95

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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.