Home / 15,087.78-20,820.60-8,373.24

Finding the Fourth Proportional to 15,087.78, 20,820.60 and 8,373.24

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Solution

The fourth proportional to 15,087.78, 20,820.60 and 8,373.24 is: 11,554.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,087.78 : 20,820.60 = 8,373.24 : x
  2. Step 2: Convert to fraction form
    15,087.78/20,820.60 = 8,373.24/x
  3. Step 3: Cross multiply
    15,087.78x = 20,820.60 × 8,373.24
  4. Step 4: Simplify right side
    15,087.78x = 174,335,880.74
  5. Step 5: Solve for x
    x = 174,335,880.74/15,087.78
  6. Step 6: Final answer
    x = 11,554.77

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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.