Home / 28,705.86-43,068.06-12,919.35

Finding the Fourth Proportional to 28,705.86, 43,068.06 and 12,919.35

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Solution

The fourth proportional to 28,705.86, 43,068.06 and 12,919.35 is: 19,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,705.86 : 43,068.06 = 12,919.35 : x
  2. Step 2: Convert to fraction form
    28,705.86/43,068.06 = 12,919.35/x
  3. Step 3: Cross multiply
    28,705.86x = 43,068.06 × 12,919.35
  4. Step 4: Simplify right side
    28,705.86x = 556,411,340.96
  5. Step 5: Solve for x
    x = 556,411,340.96/28,705.86
  6. Step 6: Final answer
    x = 19,383.20

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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.