Home / 21,023.61-31,534.50-5,228.31

Finding the Fourth Proportional to 21,023.61, 31,534.50 and 5,228.31

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Solution

The fourth proportional to 21,023.61, 31,534.50 and 5,228.31 is: 7,842.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.61 : 31,534.50 = 5,228.31 : x
  2. Step 2: Convert to fraction form
    21,023.61/31,534.50 = 5,228.31/x
  3. Step 3: Cross multiply
    21,023.61x = 31,534.50 × 5,228.31
  4. Step 4: Simplify right side
    21,023.61x = 164,872,141.70
  5. Step 5: Solve for x
    x = 164,872,141.70/21,023.61
  6. Step 6: Final answer
    x = 7,842.24

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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.