Home / 28,165.25-38,854.92-16,221.67

Finding the Fourth Proportional to 28,165.25, 38,854.92 and 16,221.67

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Solution

The fourth proportional to 28,165.25, 38,854.92 and 16,221.67 is: 22,378.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,165.25 : 38,854.92 = 16,221.67 : x
  2. Step 2: Convert to fraction form
    28,165.25/38,854.92 = 16,221.67/x
  3. Step 3: Cross multiply
    28,165.25x = 38,854.92 × 16,221.67
  4. Step 4: Simplify right side
    28,165.25x = 630,291,690.12
  5. Step 5: Solve for x
    x = 630,291,690.12/28,165.25
  6. Step 6: Final answer
    x = 22,378.35

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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.