Home / 20,385.47-30,582.81-7,237.85

Finding the Fourth Proportional to 20,385.47, 30,582.81 and 7,237.85

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Solution

The fourth proportional to 20,385.47, 30,582.81 and 7,237.85 is: 10,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385.47 : 30,582.81 = 7,237.85 : x
  2. Step 2: Convert to fraction form
    20,385.47/30,582.81 = 7,237.85/x
  3. Step 3: Cross multiply
    20,385.47x = 30,582.81 × 7,237.85
  4. Step 4: Simplify right side
    20,385.47x = 221,353,638.44
  5. Step 5: Solve for x
    x = 221,353,638.44/20,385.47
  6. Step 6: Final answer
    x = 10,858.40

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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.