Home / 20,419.03-30,636.47-7,947.82

Finding the Fourth Proportional to 20,419.03, 30,636.47 and 7,947.82

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Solution

The fourth proportional to 20,419.03, 30,636.47 and 7,947.82 is: 11,924.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.03 : 30,636.47 = 7,947.82 : x
  2. Step 2: Convert to fraction form
    20,419.03/30,636.47 = 7,947.82/x
  3. Step 3: Cross multiply
    20,419.03x = 30,636.47 × 7,947.82
  4. Step 4: Simplify right side
    20,419.03x = 243,492,995.81
  5. Step 5: Solve for x
    x = 243,492,995.81/20,419.03
  6. Step 6: Final answer
    x = 11,924.81

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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.