Home / 31,480.34-47,267.04-21,015.56

Finding the Fourth Proportional to 31,480.34, 47,267.04 and 21,015.56

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Solution

The fourth proportional to 31,480.34, 47,267.04 and 21,015.56 is: 31,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,480.34 : 47,267.04 = 21,015.56 : x
  2. Step 2: Convert to fraction form
    31,480.34/47,267.04 = 21,015.56/x
  3. Step 3: Cross multiply
    31,480.34x = 47,267.04 × 21,015.56
  4. Step 4: Simplify right side
    31,480.34x = 993,343,315.14
  5. Step 5: Solve for x
    x = 993,343,315.14/31,480.34
  6. Step 6: Final answer
    x = 31,554.40

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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.