Home / 31,345.68-43,241.96-18,090

Finding the Fourth Proportional to 31,345.68, 43,241.96 and 18,090

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Solution

The fourth proportional to 31,345.68, 43,241.96 and 18,090 is: 24,955.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,345.68 : 43,241.96 = 18,090 : x
  2. Step 2: Convert to fraction form
    31,345.68/43,241.96 = 18,090/x
  3. Step 3: Cross multiply
    31,345.68x = 43,241.96 × 18,090
  4. Step 4: Simplify right side
    31,345.68x = 782,247,056.40
  5. Step 5: Solve for x
    x = 782,247,056.40/31,345.68
  6. Step 6: Final answer
    x = 24,955.50

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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.