Home / 9,421.32-13,001.76-5,172.51

Finding the Fourth Proportional to 9,421.32, 13,001.76 and 5,172.51

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Solution

The fourth proportional to 9,421.32, 13,001.76 and 5,172.51 is: 7,138.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.32 : 13,001.76 = 5,172.51 : x
  2. Step 2: Convert to fraction form
    9,421.32/13,001.76 = 5,172.51/x
  3. Step 3: Cross multiply
    9,421.32x = 13,001.76 × 5,172.51
  4. Step 4: Simplify right side
    9,421.32x = 67,251,733.62
  5. Step 5: Solve for x
    x = 67,251,733.62/9,421.32
  6. Step 6: Final answer
    x = 7,138.25

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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.