Home / 9,421.47-13,001.79-5,172.93

Finding the Fourth Proportional to 9,421.47, 13,001.79 and 5,172.93

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Solution

The fourth proportional to 9,421.47, 13,001.79 and 5,172.93 is: 7,138.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.47 : 13,001.79 = 5,172.93 : x
  2. Step 2: Convert to fraction form
    9,421.47/13,001.79 = 5,172.93/x
  3. Step 3: Cross multiply
    9,421.47x = 13,001.79 × 5,172.93
  4. Step 4: Simplify right side
    9,421.47x = 67,257,349.54
  5. Step 5: Solve for x
    x = 67,257,349.54/9,421.47
  6. Step 6: Final answer
    x = 7,138.73

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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.