Home / 31,023.44-42,789.40-19,683.16

Finding the Fourth Proportional to 31,023.44, 42,789.40 and 19,683.16

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Solution

The fourth proportional to 31,023.44, 42,789.40 and 19,683.16 is: 27,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,023.44 : 42,789.40 = 19,683.16 : x
  2. Step 2: Convert to fraction form
    31,023.44/42,789.40 = 19,683.16/x
  3. Step 3: Cross multiply
    31,023.44x = 42,789.40 × 19,683.16
  4. Step 4: Simplify right side
    31,023.44x = 842,230,606.50
  5. Step 5: Solve for x
    x = 842,230,606.50/31,023.44
  6. Step 6: Final answer
    x = 27,148.20

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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.