Home / 15,683.37-21,651.45-12,090.48

Finding the Fourth Proportional to 15,683.37, 21,651.45 and 12,090.48

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Solution

The fourth proportional to 15,683.37, 21,651.45 and 12,090.48 is: 16,691.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,683.37 : 21,651.45 = 12,090.48 : x
  2. Step 2: Convert to fraction form
    15,683.37/21,651.45 = 12,090.48/x
  3. Step 3: Cross multiply
    15,683.37x = 21,651.45 × 12,090.48
  4. Step 4: Simplify right side
    15,683.37x = 261,776,423.20
  5. Step 5: Solve for x
    x = 261,776,423.20/15,683.37
  6. Step 6: Final answer
    x = 16,691.34

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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.