Home / 30,987.37-42,762.44-17,561.18

Finding the Fourth Proportional to 30,987.37, 42,762.44 and 17,561.18

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Solution

The fourth proportional to 30,987.37, 42,762.44 and 17,561.18 is: 24,234.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,987.37 : 42,762.44 = 17,561.18 : x
  2. Step 2: Convert to fraction form
    30,987.37/42,762.44 = 17,561.18/x
  3. Step 3: Cross multiply
    30,987.37x = 42,762.44 × 17,561.18
  4. Step 4: Simplify right side
    30,987.37x = 750,958,906.08
  5. Step 5: Solve for x
    x = 750,958,906.08/30,987.37
  6. Step 6: Final answer
    x = 24,234.35

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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.