Home / 15,103.04-20,841.16-8,388.32

Finding the Fourth Proportional to 15,103.04, 20,841.16 and 8,388.32

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Solution

The fourth proportional to 15,103.04, 20,841.16 and 8,388.32 is: 11,575.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,103.04 : 20,841.16 = 8,388.32 : x
  2. Step 2: Convert to fraction form
    15,103.04/20,841.16 = 8,388.32/x
  3. Step 3: Cross multiply
    15,103.04x = 20,841.16 × 8,388.32
  4. Step 4: Simplify right side
    15,103.04x = 174,822,319.25
  5. Step 5: Solve for x
    x = 174,822,319.25/15,103.04
  6. Step 6: Final answer
    x = 11,575.31

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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.