Home / 30,314.28-45,477.72-12,784.26

Finding the Fourth Proportional to 30,314.28, 45,477.72 and 12,784.26

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Solution

The fourth proportional to 30,314.28, 45,477.72 and 12,784.26 is: 19,179.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,314.28 : 45,477.72 = 12,784.26 : x
  2. Step 2: Convert to fraction form
    30,314.28/45,477.72 = 12,784.26/x
  3. Step 3: Cross multiply
    30,314.28x = 45,477.72 × 12,784.26
  4. Step 4: Simplify right side
    30,314.28x = 581,398,996.69
  5. Step 5: Solve for x
    x = 581,398,996.69/30,314.28
  6. Step 6: Final answer
    x = 19,179.05

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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.