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Finding the Fourth Proportional to 28,730.88, 39,650.24 and 19,154.24

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Solution

The fourth proportional to 28,730.88, 39,650.24 and 19,154.24 is: 26,433.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730.88 : 39,650.24 = 19,154.24 : x
  2. Step 2: Convert to fraction form
    28,730.88/39,650.24 = 19,154.24/x
  3. Step 3: Cross multiply
    28,730.88x = 39,650.24 × 19,154.24
  4. Step 4: Simplify right side
    28,730.88x = 759,470,213.02
  5. Step 5: Solve for x
    x = 759,470,213.02/28,730.88
  6. Step 6: Final answer
    x = 26,433.93

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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.