Home / 20,862.07-31,299.93-7,715.44

Finding the Fourth Proportional to 20,862.07, 31,299.93 and 7,715.44

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Solution

The fourth proportional to 20,862.07, 31,299.93 and 7,715.44 is: 11,575.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.07 : 31,299.93 = 7,715.44 : x
  2. Step 2: Convert to fraction form
    20,862.07/31,299.93 = 7,715.44/x
  3. Step 3: Cross multiply
    20,862.07x = 31,299.93 × 7,715.44
  4. Step 4: Simplify right side
    20,862.07x = 241,492,731.92
  5. Step 5: Solve for x
    x = 241,492,731.92/20,862.07
  6. Step 6: Final answer
    x = 11,575.68

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1.5x scale

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.