Home / 30,876.32-42,611.36-29,760.96

Finding the Fourth Proportional to 30,876.32, 42,611.36 and 29,760.96

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Solution

The fourth proportional to 30,876.32, 42,611.36 and 29,760.96 is: 41,072.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876.32 : 42,611.36 = 29,760.96 : x
  2. Step 2: Convert to fraction form
    30,876.32/42,611.36 = 29,760.96/x
  3. Step 3: Cross multiply
    30,876.32x = 42,611.36 × 29,760.96
  4. Step 4: Simplify right side
    30,876.32x = 1,268,154,980.51
  5. Step 5: Solve for x
    x = 1,268,154,980.51/30,876.32
  6. Step 6: Final answer
    x = 41,072.09

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1.5x scale

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.