Home / 28,160.44-38,860.86-15,585.28

Finding the Fourth Proportional to 28,160.44, 38,860.86 and 15,585.28

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Solution

The fourth proportional to 28,160.44, 38,860.86 and 15,585.28 is: 21,507.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.44 : 38,860.86 = 15,585.28 : x
  2. Step 2: Convert to fraction form
    28,160.44/38,860.86 = 15,585.28/x
  3. Step 3: Cross multiply
    28,160.44x = 38,860.86 × 15,585.28
  4. Step 4: Simplify right side
    28,160.44x = 605,657,384.14
  5. Step 5: Solve for x
    x = 605,657,384.14/28,160.44
  6. Step 6: Final answer
    x = 21,507.38

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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.