Home / 30,762.15-42,451.07-18,825.45

Finding the Fourth Proportional to 30,762.15, 42,451.07 and 18,825.45

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Solution

The fourth proportional to 30,762.15, 42,451.07 and 18,825.45 is: 25,978.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,762.15 : 42,451.07 = 18,825.45 : x
  2. Step 2: Convert to fraction form
    30,762.15/42,451.07 = 18,825.45/x
  3. Step 3: Cross multiply
    30,762.15x = 42,451.07 × 18,825.45
  4. Step 4: Simplify right side
    30,762.15x = 799,160,401.60
  5. Step 5: Solve for x
    x = 799,160,401.60/30,762.15
  6. Step 6: Final answer
    x = 25,978.69

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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.