Home / 13,115.88-19,683.87-4,803.78

Finding the Fourth Proportional to 13,115.88, 19,683.87 and 4,803.78

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Solution

The fourth proportional to 13,115.88, 19,683.87 and 4,803.78 is: 7,209.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.88 : 19,683.87 = 4,803.78 : x
  2. Step 2: Convert to fraction form
    13,115.88/19,683.87 = 4,803.78/x
  3. Step 3: Cross multiply
    13,115.88x = 19,683.87 × 4,803.78
  4. Step 4: Simplify right side
    13,115.88x = 94,556,981.03
  5. Step 5: Solve for x
    x = 94,556,981.03/13,115.88
  6. Step 6: Final answer
    x = 7,209.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.