Home / 31,312.20-46,968.40-7,619.75

Finding the Fourth Proportional to 31,312.20, 46,968.40 and 7,619.75

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Solution

The fourth proportional to 31,312.20, 46,968.40 and 7,619.75 is: 11,429.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,312.20 : 46,968.40 = 7,619.75 : x
  2. Step 2: Convert to fraction form
    31,312.20/46,968.40 = 7,619.75/x
  3. Step 3: Cross multiply
    31,312.20x = 46,968.40 × 7,619.75
  4. Step 4: Simplify right side
    31,312.20x = 357,887,469.06
  5. Step 5: Solve for x
    x = 357,887,469.06/31,312.20
  6. Step 6: Final answer
    x = 11,429.65

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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.