Home / 15,154.47-20,904.79-12,615.03

Finding the Fourth Proportional to 15,154.47, 20,904.79 and 12,615.03

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Solution

The fourth proportional to 15,154.47, 20,904.79 and 12,615.03 is: 17,401.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,154.47 : 20,904.79 = 12,615.03 : x
  2. Step 2: Convert to fraction form
    15,154.47/20,904.79 = 12,615.03/x
  3. Step 3: Cross multiply
    15,154.47x = 20,904.79 × 12,615.03
  4. Step 4: Simplify right side
    15,154.47x = 263,714,552.99
  5. Step 5: Solve for x
    x = 263,714,552.99/15,154.47
  6. Step 6: Final answer
    x = 17,401.77

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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.