Home / 30,490.56-45,746.40-12,731.04

Finding the Fourth Proportional to 30,490.56, 45,746.40 and 12,731.04

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Solution

The fourth proportional to 30,490.56, 45,746.40 and 12,731.04 is: 19,100.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,490.56 : 45,746.40 = 12,731.04 : x
  2. Step 2: Convert to fraction form
    30,490.56/45,746.40 = 12,731.04/x
  3. Step 3: Cross multiply
    30,490.56x = 45,746.40 × 12,731.04
  4. Step 4: Simplify right side
    30,490.56x = 582,399,248.26
  5. Step 5: Solve for x
    x = 582,399,248.26/30,490.56
  6. Step 6: Final answer
    x = 19,100.97

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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.