Home / 31,431.69-47,128.08-14,795.91

Finding the Fourth Proportional to 31,431.69, 47,128.08 and 14,795.91

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Solution

The fourth proportional to 31,431.69, 47,128.08 and 14,795.91 is: 22,184.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.69 : 47,128.08 = 14,795.91 : x
  2. Step 2: Convert to fraction form
    31,431.69/47,128.08 = 14,795.91/x
  3. Step 3: Cross multiply
    31,431.69x = 47,128.08 × 14,795.91
  4. Step 4: Simplify right side
    31,431.69x = 697,302,830.15
  5. Step 5: Solve for x
    x = 697,302,830.15/31,431.69
  6. Step 6: Final answer
    x = 22,184.71

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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.