Home / 28,010.97-38,653.79-15,435.45

Finding the Fourth Proportional to 28,010.97, 38,653.79 and 15,435.45

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Solution

The fourth proportional to 28,010.97, 38,653.79 and 15,435.45 is: 21,300.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.97 : 38,653.79 = 15,435.45 : x
  2. Step 2: Convert to fraction form
    28,010.97/38,653.79 = 15,435.45/x
  3. Step 3: Cross multiply
    28,010.97x = 38,653.79 × 15,435.45
  4. Step 4: Simplify right side
    28,010.97x = 596,638,565.68
  5. Step 5: Solve for x
    x = 596,638,565.68/28,010.97
  6. Step 6: Final answer
    x = 21,300.18

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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.