Home / 15,078.07-20,803.53-11,881.45

Finding the Fourth Proportional to 15,078.07, 20,803.53 and 11,881.45

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Solution

The fourth proportional to 15,078.07, 20,803.53 and 11,881.45 is: 16,393.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,078.07 : 20,803.53 = 11,881.45 : x
  2. Step 2: Convert to fraction form
    15,078.07/20,803.53 = 11,881.45/x
  3. Step 3: Cross multiply
    15,078.07x = 20,803.53 × 11,881.45
  4. Step 4: Simplify right side
    15,078.07x = 247,176,101.52
  5. Step 5: Solve for x
    x = 247,176,101.52/15,078.07
  6. Step 6: Final answer
    x = 16,393.09

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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.