Home / 12,485.10-18,730.30-4,693.98

Finding the Fourth Proportional to 12,485.10, 18,730.30 and 4,693.98

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Solution

The fourth proportional to 12,485.10, 18,730.30 and 4,693.98 is: 7,041.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.10 : 18,730.30 = 4,693.98 : x
  2. Step 2: Convert to fraction form
    12,485.10/18,730.30 = 4,693.98/x
  3. Step 3: Cross multiply
    12,485.10x = 18,730.30 × 4,693.98
  4. Step 4: Simplify right side
    12,485.10x = 87,919,653.59
  5. Step 5: Solve for x
    x = 87,919,653.59/12,485.10
  6. Step 6: Final answer
    x = 7,041.97

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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.