Home / 15,099.71-20,829.39-9,638.58

Finding the Fourth Proportional to 15,099.71, 20,829.39 and 9,638.58

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Solution

The fourth proportional to 15,099.71, 20,829.39 and 9,638.58 is: 13,296.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,099.71 : 20,829.39 = 9,638.58 : x
  2. Step 2: Convert to fraction form
    15,099.71/20,829.39 = 9,638.58/x
  3. Step 3: Cross multiply
    15,099.71x = 20,829.39 × 9,638.58
  4. Step 4: Simplify right side
    15,099.71x = 200,765,741.87
  5. Step 5: Solve for x
    x = 200,765,741.87/15,099.71
  6. Step 6: Final answer
    x = 13,296.00

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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.