Home / 15,145.47-20,894.94-9,400.23

Finding the Fourth Proportional to 15,145.47, 20,894.94 and 9,400.23

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Solution

The fourth proportional to 15,145.47, 20,894.94 and 9,400.23 is: 12,968.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.47 : 20,894.94 = 9,400.23 : x
  2. Step 2: Convert to fraction form
    15,145.47/20,894.94 = 9,400.23/x
  3. Step 3: Cross multiply
    15,145.47x = 20,894.94 × 9,400.23
  4. Step 4: Simplify right side
    15,145.47x = 196,417,241.84
  5. Step 5: Solve for x
    x = 196,417,241.84/15,145.47
  6. Step 6: Final answer
    x = 12,968.71

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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.