Home / 30,580.58-42,200.88-18,643.16

Finding the Fourth Proportional to 30,580.58, 42,200.88 and 18,643.16

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Solution

The fourth proportional to 30,580.58, 42,200.88 and 18,643.16 is: 25,727.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,580.58 : 42,200.88 = 18,643.16 : x
  2. Step 2: Convert to fraction form
    30,580.58/42,200.88 = 18,643.16/x
  3. Step 3: Cross multiply
    30,580.58x = 42,200.88 × 18,643.16
  4. Step 4: Simplify right side
    30,580.58x = 786,757,757.98
  5. Step 5: Solve for x
    x = 786,757,757.98/30,580.58
  6. Step 6: Final answer
    x = 25,727.37

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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.