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Finding the Fourth Proportional to 29,606.76, 40,811.30 and 20,159.08

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Solution

The fourth proportional to 29,606.76, 40,811.30 and 20,159.08 is: 27,788.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,606.76 : 40,811.30 = 20,159.08 : x
  2. Step 2: Convert to fraction form
    29,606.76/40,811.30 = 20,159.08/x
  3. Step 3: Cross multiply
    29,606.76x = 40,811.30 × 20,159.08
  4. Step 4: Simplify right side
    29,606.76x = 822,718,261.60
  5. Step 5: Solve for x
    x = 822,718,261.60/29,606.76
  6. Step 6: Final answer
    x = 27,788.19

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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.