Home / 9,901.90-13,664.80-5,425.36

Finding the Fourth Proportional to 9,901.90, 13,664.80 and 5,425.36

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Solution

The fourth proportional to 9,901.90, 13,664.80 and 5,425.36 is: 7,487.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,901.90 : 13,664.80 = 5,425.36 : x
  2. Step 2: Convert to fraction form
    9,901.90/13,664.80 = 5,425.36/x
  3. Step 3: Cross multiply
    9,901.90x = 13,664.80 × 5,425.36
  4. Step 4: Simplify right side
    9,901.90x = 74,136,459.33
  5. Step 5: Solve for x
    x = 74,136,459.33/9,901.90
  6. Step 6: Final answer
    x = 7,487.09

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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.