Home / 13,349.16-18,429.34-8,879

Finding the Fourth Proportional to 13,349.16, 18,429.34 and 8,879

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Solution

The fourth proportional to 13,349.16, 18,429.34 and 8,879 is: 12,258.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.16 : 18,429.34 = 8,879 : x
  2. Step 2: Convert to fraction form
    13,349.16/18,429.34 = 8,879/x
  3. Step 3: Cross multiply
    13,349.16x = 18,429.34 × 8,879
  4. Step 4: Simplify right side
    13,349.16x = 163,634,109.86
  5. Step 5: Solve for x
    x = 163,634,109.86/13,349.16
  6. Step 6: Final answer
    x = 12,258.01

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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.