Home / 31,307.63-46,969.13-9,121.21

Finding the Fourth Proportional to 31,307.63, 46,969.13 and 9,121.21

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Solution

The fourth proportional to 31,307.63, 46,969.13 and 9,121.21 is: 13,684.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,307.63 : 46,969.13 = 9,121.21 : x
  2. Step 2: Convert to fraction form
    31,307.63/46,969.13 = 9,121.21/x
  3. Step 3: Cross multiply
    31,307.63x = 46,969.13 × 9,121.21
  4. Step 4: Simplify right side
    31,307.63x = 428,415,298.25
  5. Step 5: Solve for x
    x = 428,415,298.25/31,307.63
  6. Step 6: Final answer
    x = 13,684.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.