Home / 20,386.45-30,582.72-7,237.72

Finding the Fourth Proportional to 20,386.45, 30,582.72 and 7,237.72

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Solution

The fourth proportional to 20,386.45, 30,582.72 and 7,237.72 is: 10,857.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.45 : 30,582.72 = 7,237.72 : x
  2. Step 2: Convert to fraction form
    20,386.45/30,582.72 = 7,237.72/x
  3. Step 3: Cross multiply
    20,386.45x = 30,582.72 × 7,237.72
  4. Step 4: Simplify right side
    20,386.45x = 221,349,164.20
  5. Step 5: Solve for x
    x = 221,349,164.20/20,386.45
  6. Step 6: Final answer
    x = 10,857.66

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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.