Home / 58,584.12-87,858-21,139.34

Finding the Fourth Proportional to 58,584.12, 87,858 and 21,139.34

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Solution

The fourth proportional to 58,584.12, 87,858 and 21,139.34 is: 31,702.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,584.12 : 87,858 = 21,139.34 : x
  2. Step 2: Convert to fraction form
    58,584.12/87,858 = 21,139.34/x
  3. Step 3: Cross multiply
    58,584.12x = 87,858 × 21,139.34
  4. Step 4: Simplify right side
    58,584.12x = 1,857,260,133.72
  5. Step 5: Solve for x
    x = 1,857,260,133.72/58,584.12
  6. Step 6: Final answer
    x = 31,702.45

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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.