Home / 12,879.48-19,287.54-6,284.40

Finding the Fourth Proportional to 12,879.48, 19,287.54 and 6,284.40

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Solution

The fourth proportional to 12,879.48, 19,287.54 and 6,284.40 is: 9,411.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.48 : 19,287.54 = 6,284.40 : x
  2. Step 2: Convert to fraction form
    12,879.48/19,287.54 = 6,284.40/x
  3. Step 3: Cross multiply
    12,879.48x = 19,287.54 × 6,284.40
  4. Step 4: Simplify right side
    12,879.48x = 121,210,616.38
  5. Step 5: Solve for x
    x = 121,210,616.38/12,879.48
  6. Step 6: Final answer
    x = 9,411.14

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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.