Home / 20,259.05-30,393.43-7,779.17

Finding the Fourth Proportional to 20,259.05, 30,393.43 and 7,779.17

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Solution

The fourth proportional to 20,259.05, 30,393.43 and 7,779.17 is: 11,670.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.05 : 30,393.43 = 7,779.17 : x
  2. Step 2: Convert to fraction form
    20,259.05/30,393.43 = 7,779.17/x
  3. Step 3: Cross multiply
    20,259.05x = 30,393.43 × 7,779.17
  4. Step 4: Simplify right side
    20,259.05x = 236,435,715.39
  5. Step 5: Solve for x
    x = 236,435,715.39/20,259.05
  6. Step 6: Final answer
    x = 11,670.62

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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.