Home / 13,750.74-18,980.58-9,783.36

Finding the Fourth Proportional to 13,750.74, 18,980.58 and 9,783.36

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Solution

The fourth proportional to 13,750.74, 18,980.58 and 9,783.36 is: 13,504.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.74 : 18,980.58 = 9,783.36 : x
  2. Step 2: Convert to fraction form
    13,750.74/18,980.58 = 9,783.36/x
  3. Step 3: Cross multiply
    13,750.74x = 18,980.58 × 9,783.36
  4. Step 4: Simplify right side
    13,750.74x = 185,693,847.15
  5. Step 5: Solve for x
    x = 185,693,847.15/13,750.74
  6. Step 6: Final answer
    x = 13,504.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.