Home / 20,340.03-28,068.95-11,387.54

Finding the Fourth Proportional to 20,340.03, 28,068.95 and 11,387.54

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Solution

The fourth proportional to 20,340.03, 28,068.95 and 11,387.54 is: 15,714.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.03 : 28,068.95 = 11,387.54 : x
  2. Step 2: Convert to fraction form
    20,340.03/28,068.95 = 11,387.54/x
  3. Step 3: Cross multiply
    20,340.03x = 28,068.95 × 11,387.54
  4. Step 4: Simplify right side
    20,340.03x = 319,636,093.60
  5. Step 5: Solve for x
    x = 319,636,093.60/20,340.03
  6. Step 6: Final answer
    x = 15,714.63

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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.