Home / 18,953.18-28,445.26-13,411.87

Finding the Fourth Proportional to 18,953.18, 28,445.26 and 13,411.87

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Solution

The fourth proportional to 18,953.18, 28,445.26 and 13,411.87 is: 20,128.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.18 : 28,445.26 = 13,411.87 : x
  2. Step 2: Convert to fraction form
    18,953.18/28,445.26 = 13,411.87/x
  3. Step 3: Cross multiply
    18,953.18x = 28,445.26 × 13,411.87
  4. Step 4: Simplify right side
    18,953.18x = 381,504,129.24
  5. Step 5: Solve for x
    x = 381,504,129.24/18,953.18
  6. Step 6: Final answer
    x = 20,128.77

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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.