Home / 12,678.48-19,016.08-3,319.14

Finding the Fourth Proportional to 12,678.48, 19,016.08 and 3,319.14

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Solution

The fourth proportional to 12,678.48, 19,016.08 and 3,319.14 is: 4,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.48 : 19,016.08 = 3,319.14 : x
  2. Step 2: Convert to fraction form
    12,678.48/19,016.08 = 3,319.14/x
  3. Step 3: Cross multiply
    12,678.48x = 19,016.08 × 3,319.14
  4. Step 4: Simplify right side
    12,678.48x = 63,117,031.77
  5. Step 5: Solve for x
    x = 63,117,031.77/12,678.48
  6. Step 6: Final answer
    x = 4,978.28

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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.