Home / 30,455.28-45,671.40-12,933.36

Finding the Fourth Proportional to 30,455.28, 45,671.40 and 12,933.36

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Solution

The fourth proportional to 30,455.28, 45,671.40 and 12,933.36 is: 19,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,455.28 : 45,671.40 = 12,933.36 : x
  2. Step 2: Convert to fraction form
    30,455.28/45,671.40 = 12,933.36/x
  3. Step 3: Cross multiply
    30,455.28x = 45,671.40 × 12,933.36
  4. Step 4: Simplify right side
    30,455.28x = 590,684,657.90
  5. Step 5: Solve for x
    x = 590,684,657.90/30,455.28
  6. Step 6: Final answer
    x = 19,395.15

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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.