Home / 15,133.10-20,883.62-8,419.37

Finding the Fourth Proportional to 15,133.10, 20,883.62 and 8,419.37

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Solution

The fourth proportional to 15,133.10, 20,883.62 and 8,419.37 is: 11,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,133.10 : 20,883.62 = 8,419.37 : x
  2. Step 2: Convert to fraction form
    15,133.10/20,883.62 = 8,419.37/x
  3. Step 3: Cross multiply
    15,133.10x = 20,883.62 × 8,419.37
  4. Step 4: Simplify right side
    15,133.10x = 175,826,881.62
  5. Step 5: Solve for x
    x = 175,826,881.62/15,133.10
  6. Step 6: Final answer
    x = 11,618.70

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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.