Home / 15,518.02-21,415.35-8,444.92

Finding the Fourth Proportional to 15,518.02, 21,415.35 and 8,444.92

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Solution

The fourth proportional to 15,518.02, 21,415.35 and 8,444.92 is: 11,654.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.02 : 21,415.35 = 8,444.92 : x
  2. Step 2: Convert to fraction form
    15,518.02/21,415.35 = 8,444.92/x
  3. Step 3: Cross multiply
    15,518.02x = 21,415.35 × 8,444.92
  4. Step 4: Simplify right side
    15,518.02x = 180,850,917.52
  5. Step 5: Solve for x
    x = 180,850,917.52/15,518.02
  6. Step 6: Final answer
    x = 11,654.25

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Half scale
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Double scale
Find fourth proportional to 15,519.02, 21,416.73 and 8,445.92
Similar ratio
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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.