Home / 31,353.46-43,303.71-20,646.20

Finding the Fourth Proportional to 31,353.46, 43,303.71 and 20,646.20

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Solution

The fourth proportional to 31,353.46, 43,303.71 and 20,646.20 is: 28,515.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,353.46 : 43,303.71 = 20,646.20 : x
  2. Step 2: Convert to fraction form
    31,353.46/43,303.71 = 20,646.20/x
  3. Step 3: Cross multiply
    31,353.46x = 43,303.71 × 20,646.20
  4. Step 4: Simplify right side
    31,353.46x = 894,057,165.66
  5. Step 5: Solve for x
    x = 894,057,165.66/31,353.46
  6. Step 6: Final answer
    x = 28,515.42

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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.