Home / 37,431.28-51,655.20-20,664.28

Finding the Fourth Proportional to 37,431.28, 51,655.20 and 20,664.28

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Solution

The fourth proportional to 37,431.28, 51,655.20 and 20,664.28 is: 28,516.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,431.28 : 51,655.20 = 20,664.28 : x
  2. Step 2: Convert to fraction form
    37,431.28/51,655.20 = 20,664.28/x
  3. Step 3: Cross multiply
    37,431.28x = 51,655.20 × 20,664.28
  4. Step 4: Simplify right side
    37,431.28x = 1,067,417,516.26
  5. Step 5: Solve for x
    x = 1,067,417,516.26/37,431.28
  6. Step 6: Final answer
    x = 28,516.72

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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.