Home / 28,357.56-39,133.54-15,782.31

Finding the Fourth Proportional to 28,357.56, 39,133.54 and 15,782.31

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Solution

The fourth proportional to 28,357.56, 39,133.54 and 15,782.31 is: 21,779.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.56 : 39,133.54 = 15,782.31 : x
  2. Step 2: Convert to fraction form
    28,357.56/39,133.54 = 15,782.31/x
  3. Step 3: Cross multiply
    28,357.56x = 39,133.54 × 15,782.31
  4. Step 4: Simplify right side
    28,357.56x = 617,617,659.68
  5. Step 5: Solve for x
    x = 617,617,659.68/28,357.56
  6. Step 6: Final answer
    x = 21,779.65

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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.