Home / 30,388.26-45,599.40-12,871.20

Finding the Fourth Proportional to 30,388.26, 45,599.40 and 12,871.20

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Solution

The fourth proportional to 30,388.26, 45,599.40 and 12,871.20 is: 19,314.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,388.26 : 45,599.40 = 12,871.20 : x
  2. Step 2: Convert to fraction form
    30,388.26/45,599.40 = 12,871.20/x
  3. Step 3: Cross multiply
    30,388.26x = 45,599.40 × 12,871.20
  4. Step 4: Simplify right side
    30,388.26x = 586,918,997.28
  5. Step 5: Solve for x
    x = 586,918,997.28/30,388.26
  6. Step 6: Final answer
    x = 19,314.00

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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.