Home / 13,813.13-20,719.69-4,579.13

Finding the Fourth Proportional to 13,813.13, 20,719.69 and 4,579.13

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Solution

The fourth proportional to 13,813.13, 20,719.69 and 4,579.13 is: 6,868.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.13 : 20,719.69 = 4,579.13 : x
  2. Step 2: Convert to fraction form
    13,813.13/20,719.69 = 4,579.13/x
  3. Step 3: Cross multiply
    13,813.13x = 20,719.69 × 4,579.13
  4. Step 4: Simplify right side
    13,813.13x = 94,878,154.07
  5. Step 5: Solve for x
    x = 94,878,154.07/13,813.13
  6. Step 6: Final answer
    x = 6,868.69

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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.