Home / 21,038.59-31,557.75-5,243.53

Finding the Fourth Proportional to 21,038.59, 31,557.75 and 5,243.53

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Solution

The fourth proportional to 21,038.59, 31,557.75 and 5,243.53 is: 7,865.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.59 : 31,557.75 = 5,243.53 : x
  2. Step 2: Convert to fraction form
    21,038.59/31,557.75 = 5,243.53/x
  3. Step 3: Cross multiply
    21,038.59x = 31,557.75 × 5,243.53
  4. Step 4: Simplify right side
    21,038.59x = 165,474,008.86
  5. Step 5: Solve for x
    x = 165,474,008.86/21,038.59
  6. Step 6: Final answer
    x = 7,865.26

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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.