Home / 19,918.31-29,875.30-12,500.73

Finding the Fourth Proportional to 19,918.31, 29,875.30 and 12,500.73

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Solution

The fourth proportional to 19,918.31, 29,875.30 and 12,500.73 is: 18,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.31 : 29,875.30 = 12,500.73 : x
  2. Step 2: Convert to fraction form
    19,918.31/29,875.30 = 12,500.73/x
  3. Step 3: Cross multiply
    19,918.31x = 29,875.30 × 12,500.73
  4. Step 4: Simplify right side
    19,918.31x = 373,463,027.72
  5. Step 5: Solve for x
    x = 373,463,027.72/19,918.31
  6. Step 6: Final answer
    x = 18,749.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.