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Finding the Fourth Proportional to 28,759.03, 43,130.03 and 12,954.92

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Solution

The fourth proportional to 28,759.03, 43,130.03 and 12,954.92 is: 19,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,759.03 : 43,130.03 = 12,954.92 : x
  2. Step 2: Convert to fraction form
    28,759.03/43,130.03 = 12,954.92/x
  3. Step 3: Cross multiply
    28,759.03x = 43,130.03 × 12,954.92
  4. Step 4: Simplify right side
    28,759.03x = 558,746,023.47
  5. Step 5: Solve for x
    x = 558,746,023.47/28,759.03
  6. Step 6: Final answer
    x = 19,428.55

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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.