Home / 20,623.69-28,460.72-11,192.26

Finding the Fourth Proportional to 20,623.69, 28,460.72 and 11,192.26

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Solution

The fourth proportional to 20,623.69, 28,460.72 and 11,192.26 is: 15,445.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.69 : 28,460.72 = 11,192.26 : x
  2. Step 2: Convert to fraction form
    20,623.69/28,460.72 = 11,192.26/x
  3. Step 3: Cross multiply
    20,623.69x = 28,460.72 × 11,192.26
  4. Step 4: Simplify right side
    20,623.69x = 318,539,579.76
  5. Step 5: Solve for x
    x = 318,539,579.76/20,623.69
  6. Step 6: Final answer
    x = 15,445.32

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1.5x scale

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.