Home / 12,130.40-18,195.59-3,365.31

Finding the Fourth Proportional to 12,130.40, 18,195.59 and 3,365.31

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Solution

The fourth proportional to 12,130.40, 18,195.59 and 3,365.31 is: 5,047.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.40 : 18,195.59 = 3,365.31 : x
  2. Step 2: Convert to fraction form
    12,130.40/18,195.59 = 3,365.31/x
  3. Step 3: Cross multiply
    12,130.40x = 18,195.59 × 3,365.31
  4. Step 4: Simplify right side
    12,130.40x = 61,233,809.40
  5. Step 5: Solve for x
    x = 61,233,809.40/12,130.40
  6. Step 6: Final answer
    x = 5,047.97

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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.