Home / 12,605.04-18,905.76-4,285.35

Finding the Fourth Proportional to 12,605.04, 18,905.76 and 4,285.35

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Solution

The fourth proportional to 12,605.04, 18,905.76 and 4,285.35 is: 6,427.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.04 : 18,905.76 = 4,285.35 : x
  2. Step 2: Convert to fraction form
    12,605.04/18,905.76 = 4,285.35/x
  3. Step 3: Cross multiply
    12,605.04x = 18,905.76 × 4,285.35
  4. Step 4: Simplify right side
    12,605.04x = 81,017,798.62
  5. Step 5: Solve for x
    x = 81,017,798.62/12,605.04
  6. Step 6: Final answer
    x = 6,427.41

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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.