Home / 31,386.47-43,313.64-17,239.31

Finding the Fourth Proportional to 31,386.47, 43,313.64 and 17,239.31

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Solution

The fourth proportional to 31,386.47, 43,313.64 and 17,239.31 is: 23,790.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.47 : 43,313.64 = 17,239.31 : x
  2. Step 2: Convert to fraction form
    31,386.47/43,313.64 = 17,239.31/x
  3. Step 3: Cross multiply
    31,386.47x = 43,313.64 × 17,239.31
  4. Step 4: Simplify right side
    31,386.47x = 746,697,392.04
  5. Step 5: Solve for x
    x = 746,697,392.04/31,386.47
  6. Step 6: Final answer
    x = 23,790.42

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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.