Home / 30,040.80-45,025.20-12,501.60

Finding the Fourth Proportional to 30,040.80, 45,025.20 and 12,501.60

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Solution

The fourth proportional to 30,040.80, 45,025.20 and 12,501.60 is: 18,737.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,040.80 : 45,025.20 = 12,501.60 : x
  2. Step 2: Convert to fraction form
    30,040.80/45,025.20 = 12,501.60/x
  3. Step 3: Cross multiply
    30,040.80x = 45,025.20 × 12,501.60
  4. Step 4: Simplify right side
    30,040.80x = 562,887,040.32
  5. Step 5: Solve for x
    x = 562,887,040.32/30,040.80
  6. Step 6: Final answer
    x = 18,737.42

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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.