Home / 31,305.12-46,957.68-9,120.23

Finding the Fourth Proportional to 31,305.12, 46,957.68 and 9,120.23

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Solution

The fourth proportional to 31,305.12, 46,957.68 and 9,120.23 is: 13,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,305.12 : 46,957.68 = 9,120.23 : x
  2. Step 2: Convert to fraction form
    31,305.12/46,957.68 = 9,120.23/x
  3. Step 3: Cross multiply
    31,305.12x = 46,957.68 × 9,120.23
  4. Step 4: Simplify right side
    31,305.12x = 428,264,607.08
  5. Step 5: Solve for x
    x = 428,264,607.08/31,305.12
  6. Step 6: Final answer
    x = 13,680.34

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1.5x scale

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.