Home / 20,572.07-30,858.08-4,989.69

Finding the Fourth Proportional to 20,572.07, 30,858.08 and 4,989.69

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Solution

The fourth proportional to 20,572.07, 30,858.08 and 4,989.69 is: 7,484.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.07 : 30,858.08 = 4,989.69 : x
  2. Step 2: Convert to fraction form
    20,572.07/30,858.08 = 4,989.69/x
  3. Step 3: Cross multiply
    20,572.07x = 30,858.08 × 4,989.69
  4. Step 4: Simplify right side
    20,572.07x = 153,972,228.25
  5. Step 5: Solve for x
    x = 153,972,228.25/20,572.07
  6. Step 6: Final answer
    x = 7,484.53

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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.