Home / 20,293.64-28,009.90-13,207.76

Finding the Fourth Proportional to 20,293.64, 28,009.90 and 13,207.76

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Solution

The fourth proportional to 20,293.64, 28,009.90 and 13,207.76 is: 18,229.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.64 : 28,009.90 = 13,207.76 : x
  2. Step 2: Convert to fraction form
    20,293.64/28,009.90 = 13,207.76/x
  3. Step 3: Cross multiply
    20,293.64x = 28,009.90 × 13,207.76
  4. Step 4: Simplify right side
    20,293.64x = 369,948,036.82
  5. Step 5: Solve for x
    x = 369,948,036.82/20,293.64
  6. Step 6: Final answer
    x = 18,229.75

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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.