Home / 28,713.15-39,643.47-25,678.82

Finding the Fourth Proportional to 28,713.15, 39,643.47 and 25,678.82

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Solution

The fourth proportional to 28,713.15, 39,643.47 and 25,678.82 is: 35,454.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,713.15 : 39,643.47 = 25,678.82 : x
  2. Step 2: Convert to fraction form
    28,713.15/39,643.47 = 25,678.82/x
  3. Step 3: Cross multiply
    28,713.15x = 39,643.47 × 25,678.82
  4. Step 4: Simplify right side
    28,713.15x = 1,017,997,629.41
  5. Step 5: Solve for x
    x = 1,017,997,629.41/28,713.15
  6. Step 6: Final answer
    x = 35,454.06

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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.