Home / 15,873.21-21,899.37-9,160.53

Finding the Fourth Proportional to 15,873.21, 21,899.37 and 9,160.53

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Solution

The fourth proportional to 15,873.21, 21,899.37 and 9,160.53 is: 12,638.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.21 : 21,899.37 = 9,160.53 : x
  2. Step 2: Convert to fraction form
    15,873.21/21,899.37 = 9,160.53/x
  3. Step 3: Cross multiply
    15,873.21x = 21,899.37 × 9,160.53
  4. Step 4: Simplify right side
    15,873.21x = 200,609,835.87
  5. Step 5: Solve for x
    x = 200,609,835.87/15,873.21
  6. Step 6: Final answer
    x = 12,638.27

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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.