Home / 30,286.61-45,420.21-10,019.60

Finding the Fourth Proportional to 30,286.61, 45,420.21 and 10,019.60

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Solution

The fourth proportional to 30,286.61, 45,420.21 and 10,019.60 is: 15,026.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,286.61 : 45,420.21 = 10,019.60 : x
  2. Step 2: Convert to fraction form
    30,286.61/45,420.21 = 10,019.60/x
  3. Step 3: Cross multiply
    30,286.61x = 45,420.21 × 10,019.60
  4. Step 4: Simplify right side
    30,286.61x = 455,092,336.12
  5. Step 5: Solve for x
    x = 455,092,336.12/30,286.61
  6. Step 6: Final answer
    x = 15,026.19

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1.5x scale

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.