Home / 20,943.01-28,903.13-11,513.53

Finding the Fourth Proportional to 20,943.01, 28,903.13 and 11,513.53

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Solution

The fourth proportional to 20,943.01, 28,903.13 and 11,513.53 is: 15,889.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.01 : 28,903.13 = 11,513.53 : x
  2. Step 2: Convert to fraction form
    20,943.01/28,903.13 = 11,513.53/x
  3. Step 3: Cross multiply
    20,943.01x = 28,903.13 × 11,513.53
  4. Step 4: Simplify right side
    20,943.01x = 332,777,054.35
  5. Step 5: Solve for x
    x = 332,777,054.35/20,943.01
  6. Step 6: Final answer
    x = 15,889.65

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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.