Home / 28,680.09-39,574.47-15,932.31

Finding the Fourth Proportional to 28,680.09, 39,574.47 and 15,932.31

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Solution

The fourth proportional to 28,680.09, 39,574.47 and 15,932.31 is: 21,984.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680.09 : 39,574.47 = 15,932.31 : x
  2. Step 2: Convert to fraction form
    28,680.09/39,574.47 = 15,932.31/x
  3. Step 3: Cross multiply
    28,680.09x = 39,574.47 × 15,932.31
  4. Step 4: Simplify right side
    28,680.09x = 630,512,724.13
  5. Step 5: Solve for x
    x = 630,512,724.13/28,680.09
  6. Step 6: Final answer
    x = 21,984.34

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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.