Home / 28,918.12-43,327.63-19,412.65

Finding the Fourth Proportional to 28,918.12, 43,327.63 and 19,412.65

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Solution

The fourth proportional to 28,918.12, 43,327.63 and 19,412.65 is: 29,085.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.12 : 43,327.63 = 19,412.65 : x
  2. Step 2: Convert to fraction form
    28,918.12/43,327.63 = 19,412.65/x
  3. Step 3: Cross multiply
    28,918.12x = 43,327.63 × 19,412.65
  4. Step 4: Simplify right side
    28,918.12x = 841,104,116.52
  5. Step 5: Solve for x
    x = 841,104,116.52/28,918.12
  6. Step 6: Final answer
    x = 29,085.71

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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.