Home / 12,776.90-19,147.86-9,654.35

Finding the Fourth Proportional to 12,776.90, 19,147.86 and 9,654.35

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Solution

The fourth proportional to 12,776.90, 19,147.86 and 9,654.35 is: 14,468.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,776.90 : 19,147.86 = 9,654.35 : x
  2. Step 2: Convert to fraction form
    12,776.90/19,147.86 = 9,654.35/x
  3. Step 3: Cross multiply
    12,776.90x = 19,147.86 × 9,654.35
  4. Step 4: Simplify right side
    12,776.90x = 184,860,046.45
  5. Step 5: Solve for x
    x = 184,860,046.45/12,776.90
  6. Step 6: Final answer
    x = 14,468.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.