Home / 28,561.96-39,416.64-15,986.68

Finding the Fourth Proportional to 28,561.96, 39,416.64 and 15,986.68

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Solution

The fourth proportional to 28,561.96, 39,416.64 and 15,986.68 is: 22,062.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.96 : 39,416.64 = 15,986.68 : x
  2. Step 2: Convert to fraction form
    28,561.96/39,416.64 = 15,986.68/x
  3. Step 3: Cross multiply
    28,561.96x = 39,416.64 × 15,986.68
  4. Step 4: Simplify right side
    28,561.96x = 630,141,210.36
  5. Step 5: Solve for x
    x = 630,141,210.36/28,561.96
  6. Step 6: Final answer
    x = 22,062.25

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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.