Home / 38,730.40-58,047.08-20,961.03

Finding the Fourth Proportional to 38,730.40, 58,047.08 and 20,961.03

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Solution

The fourth proportional to 38,730.40, 58,047.08 and 20,961.03 is: 31,415.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,730.40 : 58,047.08 = 20,961.03 : x
  2. Step 2: Convert to fraction form
    38,730.40/58,047.08 = 20,961.03/x
  3. Step 3: Cross multiply
    38,730.40x = 58,047.08 × 20,961.03
  4. Step 4: Simplify right side
    38,730.40x = 1,216,726,489.55
  5. Step 5: Solve for x
    x = 1,216,726,489.55/38,730.40
  6. Step 6: Final answer
    x = 31,415.28

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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.