Home / 31,279.42-46,920.53-10,220.75

Finding the Fourth Proportional to 31,279.42, 46,920.53 and 10,220.75

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Solution

The fourth proportional to 31,279.42, 46,920.53 and 10,220.75 is: 15,331.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,279.42 : 46,920.53 = 10,220.75 : x
  2. Step 2: Convert to fraction form
    31,279.42/46,920.53 = 10,220.75/x
  3. Step 3: Cross multiply
    31,279.42x = 46,920.53 × 10,220.75
  4. Step 4: Simplify right side
    31,279.42x = 479,562,721.29
  5. Step 5: Solve for x
    x = 479,562,721.29/31,279.42
  6. Step 6: Final answer
    x = 15,331.57

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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.