Home / 12,730.60-19,102.86-4,939.72

Finding the Fourth Proportional to 12,730.60, 19,102.86 and 4,939.72

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Solution

The fourth proportional to 12,730.60, 19,102.86 and 4,939.72 is: 7,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730.60 : 19,102.86 = 4,939.72 : x
  2. Step 2: Convert to fraction form
    12,730.60/19,102.86 = 4,939.72/x
  3. Step 3: Cross multiply
    12,730.60x = 19,102.86 × 4,939.72
  4. Step 4: Simplify right side
    12,730.60x = 94,362,779.60
  5. Step 5: Solve for x
    x = 94,362,779.60/12,730.60
  6. Step 6: Final answer
    x = 7,412.28

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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.