Home / 28,376.16-39,158.74-15,629.08

Finding the Fourth Proportional to 28,376.16, 39,158.74 and 15,629.08

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Solution

The fourth proportional to 28,376.16, 39,158.74 and 15,629.08 is: 21,567.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,376.16 : 39,158.74 = 15,629.08 : x
  2. Step 2: Convert to fraction form
    28,376.16/39,158.74 = 15,629.08/x
  3. Step 3: Cross multiply
    28,376.16x = 39,158.74 × 15,629.08
  4. Step 4: Simplify right side
    28,376.16x = 612,015,080.16
  5. Step 5: Solve for x
    x = 612,015,080.16/28,376.16
  6. Step 6: Final answer
    x = 21,567.93

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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.