Home / 31,443.72-47,155.53-10,379.85

Finding the Fourth Proportional to 31,443.72, 47,155.53 and 10,379.85

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Solution

The fourth proportional to 31,443.72, 47,155.53 and 10,379.85 is: 15,566.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,443.72 : 47,155.53 = 10,379.85 : x
  2. Step 2: Convert to fraction form
    31,443.72/47,155.53 = 10,379.85/x
  3. Step 3: Cross multiply
    31,443.72x = 47,155.53 × 10,379.85
  4. Step 4: Simplify right side
    31,443.72x = 489,467,328.07
  5. Step 5: Solve for x
    x = 489,467,328.07/31,443.72
  6. Step 6: Final answer
    x = 15,566.46

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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.