Home / 9,885.62-13,642.44-5,409.63

Finding the Fourth Proportional to 9,885.62, 13,642.44 and 5,409.63

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Solution

The fourth proportional to 9,885.62, 13,642.44 and 5,409.63 is: 7,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.62 : 13,642.44 = 5,409.63 : x
  2. Step 2: Convert to fraction form
    9,885.62/13,642.44 = 5,409.63/x
  3. Step 3: Cross multiply
    9,885.62x = 13,642.44 × 5,409.63
  4. Step 4: Simplify right side
    9,885.62x = 73,800,552.70
  5. Step 5: Solve for x
    x = 73,800,552.70/9,885.62
  6. Step 6: Final answer
    x = 7,465.45

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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.