Home / 31,291.46-43,143.46-20,664.26

Finding the Fourth Proportional to 31,291.46, 43,143.46 and 20,664.26

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Solution

The fourth proportional to 31,291.46, 43,143.46 and 20,664.26 is: 28,491.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,291.46 : 43,143.46 = 20,664.26 : x
  2. Step 2: Convert to fraction form
    31,291.46/43,143.46 = 20,664.26/x
  3. Step 3: Cross multiply
    31,291.46x = 43,143.46 × 20,664.26
  4. Step 4: Simplify right side
    31,291.46x = 891,527,407.36
  5. Step 5: Solve for x
    x = 891,527,407.36/31,291.46
  6. Step 6: Final answer
    x = 28,491.08

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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.