Home / 31,289.60-43,187.28-19,345.76

Finding the Fourth Proportional to 31,289.60, 43,187.28 and 19,345.76

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Solution

The fourth proportional to 31,289.60, 43,187.28 and 19,345.76 is: 26,701.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,289.60 : 43,187.28 = 19,345.76 : x
  2. Step 2: Convert to fraction form
    31,289.60/43,187.28 = 19,345.76/x
  3. Step 3: Cross multiply
    31,289.60x = 43,187.28 × 19,345.76
  4. Step 4: Simplify right side
    31,289.60x = 835,490,753.93
  5. Step 5: Solve for x
    x = 835,490,753.93/31,289.60
  6. Step 6: Final answer
    x = 26,701.87

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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.