Home / 19,980.10-30,014.70-16,699.60

Finding the Fourth Proportional to 19,980.10, 30,014.70 and 16,699.60

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Solution

The fourth proportional to 19,980.10, 30,014.70 and 16,699.60 is: 25,086.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.10 : 30,014.70 = 16,699.60 : x
  2. Step 2: Convert to fraction form
    19,980.10/30,014.70 = 16,699.60/x
  3. Step 3: Cross multiply
    19,980.10x = 30,014.70 × 16,699.60
  4. Step 4: Simplify right side
    19,980.10x = 501,233,484.12
  5. Step 5: Solve for x
    x = 501,233,484.12/19,980.10
  6. Step 6: Final answer
    x = 25,086.64

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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.