Home / 19,018.74-28,515.96-9,138.36

Finding the Fourth Proportional to 19,018.74, 28,515.96 and 9,138.36

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Solution

The fourth proportional to 19,018.74, 28,515.96 and 9,138.36 is: 13,701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,018.74 : 28,515.96 = 9,138.36 : x
  2. Step 2: Convert to fraction form
    19,018.74/28,515.96 = 9,138.36/x
  3. Step 3: Cross multiply
    19,018.74x = 28,515.96 × 9,138.36
  4. Step 4: Simplify right side
    19,018.74x = 260,589,108.23
  5. Step 5: Solve for x
    x = 260,589,108.23/19,018.74
  6. Step 6: Final answer
    x = 13,701.70

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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.