Home / 28,574.16-39,431.76-15,999.12

Finding the Fourth Proportional to 28,574.16, 39,431.76 and 15,999.12

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Solution

The fourth proportional to 28,574.16, 39,431.76 and 15,999.12 is: 22,078.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,574.16 : 39,431.76 = 15,999.12 : x
  2. Step 2: Convert to fraction form
    28,574.16/39,431.76 = 15,999.12/x
  3. Step 3: Cross multiply
    28,574.16x = 39,431.76 × 15,999.12
  4. Step 4: Simplify right side
    28,574.16x = 630,873,460.05
  5. Step 5: Solve for x
    x = 630,873,460.05/28,574.16
  6. Step 6: Final answer
    x = 22,078.46

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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.