Home / 15,401.52-21,245.64-9,112.68

Finding the Fourth Proportional to 15,401.52, 21,245.64 and 9,112.68

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Solution

The fourth proportional to 15,401.52, 21,245.64 and 9,112.68 is: 12,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401.52 : 21,245.64 = 9,112.68 : x
  2. Step 2: Convert to fraction form
    15,401.52/21,245.64 = 9,112.68/x
  3. Step 3: Cross multiply
    15,401.52x = 21,245.64 × 9,112.68
  4. Step 4: Simplify right side
    15,401.52x = 193,604,718.72
  5. Step 5: Solve for x
    x = 193,604,718.72/15,401.52
  6. Step 6: Final answer
    x = 12,570.49

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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.