Home / 18,973.44-28,457.49-11,931.99

Finding the Fourth Proportional to 18,973.44, 28,457.49 and 11,931.99

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Solution

The fourth proportional to 18,973.44, 28,457.49 and 11,931.99 is: 17,896.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.44 : 28,457.49 = 11,931.99 : x
  2. Step 2: Convert to fraction form
    18,973.44/28,457.49 = 11,931.99/x
  3. Step 3: Cross multiply
    18,973.44x = 28,457.49 × 11,931.99
  4. Step 4: Simplify right side
    18,973.44x = 339,554,486.11
  5. Step 5: Solve for x
    x = 339,554,486.11/18,973.44
  6. Step 6: Final answer
    x = 17,896.31

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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.