Home / 31,491.08-43,478.60-19,572.20

Finding the Fourth Proportional to 31,491.08, 43,478.60 and 19,572.20

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Solution

The fourth proportional to 31,491.08, 43,478.60 and 19,572.20 is: 27,022.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,491.08 : 43,478.60 = 19,572.20 : x
  2. Step 2: Convert to fraction form
    31,491.08/43,478.60 = 19,572.20/x
  3. Step 3: Cross multiply
    31,491.08x = 43,478.60 × 19,572.20
  4. Step 4: Simplify right side
    31,491.08x = 850,971,854.92
  5. Step 5: Solve for x
    x = 850,971,854.92/31,491.08
  6. Step 6: Final answer
    x = 27,022.63

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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.