Home / 15,282.68-21,099.30-9,986.36

Finding the Fourth Proportional to 15,282.68, 21,099.30 and 9,986.36

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Solution

The fourth proportional to 15,282.68, 21,099.30 and 9,986.36 is: 13,787.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,282.68 : 21,099.30 = 9,986.36 : x
  2. Step 2: Convert to fraction form
    15,282.68/21,099.30 = 9,986.36/x
  3. Step 3: Cross multiply
    15,282.68x = 21,099.30 × 9,986.36
  4. Step 4: Simplify right side
    15,282.68x = 210,705,205.55
  5. Step 5: Solve for x
    x = 210,705,205.55/15,282.68
  6. Step 6: Final answer
    x = 13,787.19

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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.