Home / 40,813.16-61,212.80-18,621.32

Finding the Fourth Proportional to 40,813.16, 61,212.80 and 18,621.32

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Solution

The fourth proportional to 40,813.16, 61,212.80 and 18,621.32 is: 27,928.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,813.16 : 61,212.80 = 18,621.32 : x
  2. Step 2: Convert to fraction form
    40,813.16/61,212.80 = 18,621.32/x
  3. Step 3: Cross multiply
    40,813.16x = 61,212.80 × 18,621.32
  4. Step 4: Simplify right side
    40,813.16x = 1,139,862,877.39
  5. Step 5: Solve for x
    x = 1,139,862,877.39/40,813.16
  6. Step 6: Final answer
    x = 27,928.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.