Home / 31,742.80-43,803.38-18,313.26

Finding the Fourth Proportional to 31,742.80, 43,803.38 and 18,313.26

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Solution

The fourth proportional to 31,742.80, 43,803.38 and 18,313.26 is: 25,271.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,742.80 : 43,803.38 = 18,313.26 : x
  2. Step 2: Convert to fraction form
    31,742.80/43,803.38 = 18,313.26/x
  3. Step 3: Cross multiply
    31,742.80x = 43,803.38 × 18,313.26
  4. Step 4: Simplify right side
    31,742.80x = 802,182,686.82
  5. Step 5: Solve for x
    x = 802,182,686.82/31,742.80
  6. Step 6: Final answer
    x = 25,271.33

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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.