Home / 15,203.22-20,980.80-8,488.62

Finding the Fourth Proportional to 15,203.22, 20,980.80 and 8,488.62

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Solution

The fourth proportional to 15,203.22, 20,980.80 and 8,488.62 is: 11,714.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,203.22 : 20,980.80 = 8,488.62 : x
  2. Step 2: Convert to fraction form
    15,203.22/20,980.80 = 8,488.62/x
  3. Step 3: Cross multiply
    15,203.22x = 20,980.80 × 8,488.62
  4. Step 4: Simplify right side
    15,203.22x = 178,098,038.50
  5. Step 5: Solve for x
    x = 178,098,038.50/15,203.22
  6. Step 6: Final answer
    x = 11,714.49

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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.