Home / 21,071.02-31,606.14-6,289.96

Finding the Fourth Proportional to 21,071.02, 31,606.14 and 6,289.96

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Solution

The fourth proportional to 21,071.02, 31,606.14 and 6,289.96 is: 9,434.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.02 : 31,606.14 = 6,289.96 : x
  2. Step 2: Convert to fraction form
    21,071.02/31,606.14 = 6,289.96/x
  3. Step 3: Cross multiply
    21,071.02x = 31,606.14 × 6,289.96
  4. Step 4: Simplify right side
    21,071.02x = 198,801,356.35
  5. Step 5: Solve for x
    x = 198,801,356.35/21,071.02
  6. Step 6: Final answer
    x = 9,434.82

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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.