Home / 31,718.07-43,751.69-20,963.03

Finding the Fourth Proportional to 31,718.07, 43,751.69 and 20,963.03

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Solution

The fourth proportional to 31,718.07, 43,751.69 and 20,963.03 is: 28,916.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.07 : 43,751.69 = 20,963.03 : x
  2. Step 2: Convert to fraction form
    31,718.07/43,751.69 = 20,963.03/x
  3. Step 3: Cross multiply
    31,718.07x = 43,751.69 × 20,963.03
  4. Step 4: Simplify right side
    31,718.07x = 917,167,666.45
  5. Step 5: Solve for x
    x = 917,167,666.45/31,718.07
  6. Step 6: Final answer
    x = 28,916.25

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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.