Home / 28,240.09-38,970.97-15,319.18

Finding the Fourth Proportional to 28,240.09, 38,970.97 and 15,319.18

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Solution

The fourth proportional to 28,240.09, 38,970.97 and 15,319.18 is: 21,140.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.09 : 38,970.97 = 15,319.18 : x
  2. Step 2: Convert to fraction form
    28,240.09/38,970.97 = 15,319.18/x
  3. Step 3: Cross multiply
    28,240.09x = 38,970.97 × 15,319.18
  4. Step 4: Simplify right side
    28,240.09x = 597,003,181.58
  5. Step 5: Solve for x
    x = 597,003,181.58/28,240.09
  6. Step 6: Final answer
    x = 21,140.27

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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.