Home / 9,905.42-13,669.62-5,429.08

Finding the Fourth Proportional to 9,905.42, 13,669.62 and 5,429.08

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Solution

The fourth proportional to 9,905.42, 13,669.62 and 5,429.08 is: 7,492.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.42 : 13,669.62 = 5,429.08 : x
  2. Step 2: Convert to fraction form
    9,905.42/13,669.62 = 5,429.08/x
  3. Step 3: Cross multiply
    9,905.42x = 13,669.62 × 5,429.08
  4. Step 4: Simplify right side
    9,905.42x = 74,213,460.55
  5. Step 5: Solve for x
    x = 74,213,460.55/9,905.42
  6. Step 6: Final answer
    x = 7,492.21

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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.