Home / 28,213.35-38,916.72-18,154.86

Finding the Fourth Proportional to 28,213.35, 38,916.72 and 18,154.86

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Solution

The fourth proportional to 28,213.35, 38,916.72 and 18,154.86 is: 25,042.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.35 : 38,916.72 = 18,154.86 : x
  2. Step 2: Convert to fraction form
    28,213.35/38,916.72 = 18,154.86/x
  3. Step 3: Cross multiply
    28,213.35x = 38,916.72 × 18,154.86
  4. Step 4: Simplify right side
    28,213.35x = 706,527,603.26
  5. Step 5: Solve for x
    x = 706,527,603.26/28,213.35
  6. Step 6: Final answer
    x = 25,042.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.