Home / 9,421.76-13,001.96-5,172.89

Finding the Fourth Proportional to 9,421.76, 13,001.96 and 5,172.89

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Solution

The fourth proportional to 9,421.76, 13,001.96 and 5,172.89 is: 7,138.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.76 : 13,001.96 = 5,172.89 : x
  2. Step 2: Convert to fraction form
    9,421.76/13,001.96 = 5,172.89/x
  3. Step 3: Cross multiply
    9,421.76x = 13,001.96 × 5,172.89
  4. Step 4: Simplify right side
    9,421.76x = 67,257,656.79
  5. Step 5: Solve for x
    x = 67,257,656.79/9,421.76
  6. Step 6: Final answer
    x = 7,138.54

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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.