Home / 20,689.53-31,006.95-7,529.25

Finding the Fourth Proportional to 20,689.53, 31,006.95 and 7,529.25

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Solution

The fourth proportional to 20,689.53, 31,006.95 and 7,529.25 is: 11,283.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.53 : 31,006.95 = 7,529.25 : x
  2. Step 2: Convert to fraction form
    20,689.53/31,006.95 = 7,529.25/x
  3. Step 3: Cross multiply
    20,689.53x = 31,006.95 × 7,529.25
  4. Step 4: Simplify right side
    20,689.53x = 233,459,208.68
  5. Step 5: Solve for x
    x = 233,459,208.68/20,689.53
  6. Step 6: Final answer
    x = 11,283.93

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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.