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Finding the Fourth Proportional to 29,420.59, 40,609.70 and 18,810.26

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Solution

The fourth proportional to 29,420.59, 40,609.70 and 18,810.26 is: 25,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,420.59 : 40,609.70 = 18,810.26 : x
  2. Step 2: Convert to fraction form
    29,420.59/40,609.70 = 18,810.26/x
  3. Step 3: Cross multiply
    29,420.59x = 40,609.70 × 18,810.26
  4. Step 4: Simplify right side
    29,420.59x = 763,879,093.53
  5. Step 5: Solve for x
    x = 763,879,093.53/29,420.59
  6. Step 6: Final answer
    x = 25,964.10

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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.