Home / 19,953.50-29,930.40-8,857.21

Finding the Fourth Proportional to 19,953.50, 29,930.40 and 8,857.21

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Solution

The fourth proportional to 19,953.50, 29,930.40 and 8,857.21 is: 13,285.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.50 : 29,930.40 = 8,857.21 : x
  2. Step 2: Convert to fraction form
    19,953.50/29,930.40 = 8,857.21/x
  3. Step 3: Cross multiply
    19,953.50x = 29,930.40 × 8,857.21
  4. Step 4: Simplify right side
    19,953.50x = 265,099,688.53
  5. Step 5: Solve for x
    x = 265,099,688.53/19,953.50
  6. Step 6: Final answer
    x = 13,285.87

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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.