Home / 31,740.63-43,804.80-18,316.33

Finding the Fourth Proportional to 31,740.63, 43,804.80 and 18,316.33

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Solution

The fourth proportional to 31,740.63, 43,804.80 and 18,316.33 is: 25,278.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,740.63 : 43,804.80 = 18,316.33 : x
  2. Step 2: Convert to fraction form
    31,740.63/43,804.80 = 18,316.33/x
  3. Step 3: Cross multiply
    31,740.63x = 43,804.80 × 18,316.33
  4. Step 4: Simplify right side
    31,740.63x = 802,343,062.87
  5. Step 5: Solve for x
    x = 802,343,062.87/31,740.63
  6. Step 6: Final answer
    x = 25,278.11

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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.