Home / 19,756.46-29,619.21-9,890.78

Finding the Fourth Proportional to 19,756.46, 29,619.21 and 9,890.78

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Solution

The fourth proportional to 19,756.46, 29,619.21 and 9,890.78 is: 14,828.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,756.46 : 29,619.21 = 9,890.78 : x
  2. Step 2: Convert to fraction form
    19,756.46/29,619.21 = 9,890.78/x
  3. Step 3: Cross multiply
    19,756.46x = 29,619.21 × 9,890.78
  4. Step 4: Simplify right side
    19,756.46x = 292,957,089.88
  5. Step 5: Solve for x
    x = 292,957,089.88/19,756.46
  6. Step 6: Final answer
    x = 14,828.42

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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.