Home / 19,020.24-28,518.21-9,139.86

Finding the Fourth Proportional to 19,020.24, 28,518.21 and 9,139.86

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Solution

The fourth proportional to 19,020.24, 28,518.21 and 9,139.86 is: 13,703.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,020.24 : 28,518.21 = 9,139.86 : x
  2. Step 2: Convert to fraction form
    19,020.24/28,518.21 = 9,139.86/x
  3. Step 3: Cross multiply
    19,020.24x = 28,518.21 × 9,139.86
  4. Step 4: Simplify right side
    19,020.24x = 260,652,446.85
  5. Step 5: Solve for x
    x = 260,652,446.85/19,020.24
  6. Step 6: Final answer
    x = 13,703.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.