Home / 11,980.16-17,970.35-4,188.99

Finding the Fourth Proportional to 11,980.16, 17,970.35 and 4,188.99

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Solution

The fourth proportional to 11,980.16, 17,970.35 and 4,188.99 is: 6,283.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,980.16 : 17,970.35 = 4,188.99 : x
  2. Step 2: Convert to fraction form
    11,980.16/17,970.35 = 4,188.99/x
  3. Step 3: Cross multiply
    11,980.16x = 17,970.35 × 4,188.99
  4. Step 4: Simplify right side
    11,980.16x = 75,277,595.50
  5. Step 5: Solve for x
    x = 75,277,595.50/11,980.16
  6. Step 6: Final answer
    x = 6,283.52

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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.