Home / 29,405.61-40,606.64-18,813.85

Finding the Fourth Proportional to 29,405.61, 40,606.64 and 18,813.85

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Solution

The fourth proportional to 29,405.61, 40,606.64 and 18,813.85 is: 25,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,405.61 : 40,606.64 = 18,813.85 : x
  2. Step 2: Convert to fraction form
    29,405.61/40,606.64 = 18,813.85/x
  3. Step 3: Cross multiply
    29,405.61x = 40,606.64 × 18,813.85
  4. Step 4: Simplify right side
    29,405.61x = 763,967,233.96
  5. Step 5: Solve for x
    x = 763,967,233.96/29,405.61
  6. Step 6: Final answer
    x = 25,980.32

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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.