Home / 28,319.49-39,081.03-15,573.49

Finding the Fourth Proportional to 28,319.49, 39,081.03 and 15,573.49

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Solution

The fourth proportional to 28,319.49, 39,081.03 and 15,573.49 is: 21,491.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.49 : 39,081.03 = 15,573.49 : x
  2. Step 2: Convert to fraction form
    28,319.49/39,081.03 = 15,573.49/x
  3. Step 3: Cross multiply
    28,319.49x = 39,081.03 × 15,573.49
  4. Step 4: Simplify right side
    28,319.49x = 608,628,029.89
  5. Step 5: Solve for x
    x = 608,628,029.89/28,319.49
  6. Step 6: Final answer
    x = 21,491.49

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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.