Home / 20,903.04-31,353.48-5,319.72

Finding the Fourth Proportional to 20,903.04, 31,353.48 and 5,319.72

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Solution

The fourth proportional to 20,903.04, 31,353.48 and 5,319.72 is: 7,979.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.04 : 31,353.48 = 5,319.72 : x
  2. Step 2: Convert to fraction form
    20,903.04/31,353.48 = 5,319.72/x
  3. Step 3: Cross multiply
    20,903.04x = 31,353.48 × 5,319.72
  4. Step 4: Simplify right side
    20,903.04x = 166,791,734.63
  5. Step 5: Solve for x
    x = 166,791,734.63/20,903.04
  6. Step 6: Final answer
    x = 7,979.31

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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.