Home / 28,582.74-39,409.33-21,006

Finding the Fourth Proportional to 28,582.74, 39,409.33 and 21,006

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Solution

The fourth proportional to 28,582.74, 39,409.33 and 21,006 is: 28,962.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,582.74 : 39,409.33 = 21,006 : x
  2. Step 2: Convert to fraction form
    28,582.74/39,409.33 = 21,006/x
  3. Step 3: Cross multiply
    28,582.74x = 39,409.33 × 21,006
  4. Step 4: Simplify right side
    28,582.74x = 827,832,385.98
  5. Step 5: Solve for x
    x = 827,832,385.98/28,582.74
  6. Step 6: Final answer
    x = 28,962.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.