Home / 58,586.85-87,827.65-21,138.12

Finding the Fourth Proportional to 58,586.85, 87,827.65 and 21,138.12

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Solution

The fourth proportional to 58,586.85, 87,827.65 and 21,138.12 is: 31,688.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,586.85 : 87,827.65 = 21,138.12 : x
  2. Step 2: Convert to fraction form
    58,586.85/87,827.65 = 21,138.12/x
  3. Step 3: Cross multiply
    58,586.85x = 87,827.65 × 21,138.12
  4. Step 4: Simplify right side
    58,586.85x = 1,856,511,405.02
  5. Step 5: Solve for x
    x = 1,856,511,405.02/58,586.85
  6. Step 6: Final answer
    x = 31,688.19

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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.