Home / 31,705.15-47,563.20-10,647.22

Finding the Fourth Proportional to 31,705.15, 47,563.20 and 10,647.22

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Solution

The fourth proportional to 31,705.15, 47,563.20 and 10,647.22 is: 15,972.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,705.15 : 47,563.20 = 10,647.22 : x
  2. Step 2: Convert to fraction form
    31,705.15/47,563.20 = 10,647.22/x
  3. Step 3: Cross multiply
    31,705.15x = 47,563.20 × 10,647.22
  4. Step 4: Simplify right side
    31,705.15x = 506,415,801.07
  5. Step 5: Solve for x
    x = 506,415,801.07/31,705.15
  6. Step 6: Final answer
    x = 15,972.67

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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.