Home / 30,025.80-45,045.72-12,485.88

Finding the Fourth Proportional to 30,025.80, 45,045.72 and 12,485.88

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Solution

The fourth proportional to 30,025.80, 45,045.72 and 12,485.88 is: 18,731.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,025.80 : 45,045.72 = 12,485.88 : x
  2. Step 2: Convert to fraction form
    30,025.80/45,045.72 = 12,485.88/x
  3. Step 3: Cross multiply
    30,025.80x = 45,045.72 × 12,485.88
  4. Step 4: Simplify right side
    30,025.80x = 562,435,454.43
  5. Step 5: Solve for x
    x = 562,435,454.43/30,025.80
  6. Step 6: Final answer
    x = 18,731.74

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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.