Home / 28,319.63-39,081.08-15,573.03

Finding the Fourth Proportional to 28,319.63, 39,081.08 and 15,573.03

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Solution

The fourth proportional to 28,319.63, 39,081.08 and 15,573.03 is: 21,490.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.63 : 39,081.08 = 15,573.03 : x
  2. Step 2: Convert to fraction form
    28,319.63/39,081.08 = 15,573.03/x
  3. Step 3: Cross multiply
    28,319.63x = 39,081.08 × 15,573.03
  4. Step 4: Simplify right side
    28,319.63x = 608,610,723.65
  5. Step 5: Solve for x
    x = 608,610,723.65/28,319.63
  6. Step 6: Final answer
    x = 21,490.78

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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.