Home / 31,390.77-47,086.24-7,698.43

Finding the Fourth Proportional to 31,390.77, 47,086.24 and 7,698.43

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Solution

The fourth proportional to 31,390.77, 47,086.24 and 7,698.43 is: 11,547.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.77 : 47,086.24 = 7,698.43 : x
  2. Step 2: Convert to fraction form
    31,390.77/47,086.24 = 7,698.43/x
  3. Step 3: Cross multiply
    31,390.77x = 47,086.24 × 7,698.43
  4. Step 4: Simplify right side
    31,390.77x = 362,490,122.60
  5. Step 5: Solve for x
    x = 362,490,122.60/31,390.77
  6. Step 6: Final answer
    x = 11,547.67

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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.