Home / 31,422.51-43,368.30-30,384.15

Finding the Fourth Proportional to 31,422.51, 43,368.30 and 30,384.15

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Solution

The fourth proportional to 31,422.51, 43,368.30 and 30,384.15 is: 41,935.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,422.51 : 43,368.30 = 30,384.15 : x
  2. Step 2: Convert to fraction form
    31,422.51/43,368.30 = 30,384.15/x
  3. Step 3: Cross multiply
    31,422.51x = 43,368.30 × 30,384.15
  4. Step 4: Simplify right side
    31,422.51x = 1,317,708,932.45
  5. Step 5: Solve for x
    x = 1,317,708,932.45/31,422.51
  6. Step 6: Final answer
    x = 41,935.19

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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.