Home / 9,905.74-13,669.80-5,429.44

Finding the Fourth Proportional to 9,905.74, 13,669.80 and 5,429.44

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Solution

The fourth proportional to 9,905.74, 13,669.80 and 5,429.44 is: 7,492.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.74 : 13,669.80 = 5,429.44 : x
  2. Step 2: Convert to fraction form
    9,905.74/13,669.80 = 5,429.44/x
  3. Step 3: Cross multiply
    9,905.74x = 13,669.80 × 5,429.44
  4. Step 4: Simplify right side
    9,905.74x = 74,219,358.91
  5. Step 5: Solve for x
    x = 74,219,358.91/9,905.74
  6. Step 6: Final answer
    x = 7,492.56

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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.