Home / 21,156.48-31,736.28-5,574

Finding the Fourth Proportional to 21,156.48, 31,736.28 and 5,574

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Solution

The fourth proportional to 21,156.48, 31,736.28 and 5,574 is: 8,361.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.48 : 31,736.28 = 5,574 : x
  2. Step 2: Convert to fraction form
    21,156.48/31,736.28 = 5,574/x
  3. Step 3: Cross multiply
    21,156.48x = 31,736.28 × 5,574
  4. Step 4: Simplify right side
    21,156.48x = 176,898,024.72
  5. Step 5: Solve for x
    x = 176,898,024.72/21,156.48
  6. Step 6: Final answer
    x = 8,361.41

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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.