Home / 9,421.50-13,001.82-5,172.96

Finding the Fourth Proportional to 9,421.50, 13,001.82 and 5,172.96

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Solution

The fourth proportional to 9,421.50, 13,001.82 and 5,172.96 is: 7,138.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.50 : 13,001.82 = 5,172.96 : x
  2. Step 2: Convert to fraction form
    9,421.50/13,001.82 = 5,172.96/x
  3. Step 3: Cross multiply
    9,421.50x = 13,001.82 × 5,172.96
  4. Step 4: Simplify right side
    9,421.50x = 67,257,894.79
  5. Step 5: Solve for x
    x = 67,257,894.79/9,421.50
  6. Step 6: Final answer
    x = 7,138.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.