Home / 12,587.48-18,879.91-4,267.28

Finding the Fourth Proportional to 12,587.48, 18,879.91 and 4,267.28

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Solution

The fourth proportional to 12,587.48, 18,879.91 and 4,267.28 is: 6,400.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.48 : 18,879.91 = 4,267.28 : x
  2. Step 2: Convert to fraction form
    12,587.48/18,879.91 = 4,267.28/x
  3. Step 3: Cross multiply
    12,587.48x = 18,879.91 × 4,267.28
  4. Step 4: Simplify right side
    12,587.48x = 80,565,862.34
  5. Step 5: Solve for x
    x = 80,565,862.34/12,587.48
  6. Step 6: Final answer
    x = 6,400.48

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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.