Home / 29,105.60-40,134-19,657.76

Finding the Fourth Proportional to 29,105.60, 40,134 and 19,657.76

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Solution

The fourth proportional to 29,105.60, 40,134 and 19,657.76 is: 27,106.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,105.60 : 40,134 = 19,657.76 : x
  2. Step 2: Convert to fraction form
    29,105.60/40,134 = 19,657.76/x
  3. Step 3: Cross multiply
    29,105.60x = 40,134 × 19,657.76
  4. Step 4: Simplify right side
    29,105.60x = 788,944,539.84
  5. Step 5: Solve for x
    x = 788,944,539.84/29,105.60
  6. Step 6: Final answer
    x = 27,106.28

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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.