Home / 19,120.57-28,688.21-9,259.09

Finding the Fourth Proportional to 19,120.57, 28,688.21 and 9,259.09

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Solution

The fourth proportional to 19,120.57, 28,688.21 and 9,259.09 is: 13,892.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.57 : 28,688.21 = 9,259.09 : x
  2. Step 2: Convert to fraction form
    19,120.57/28,688.21 = 9,259.09/x
  3. Step 3: Cross multiply
    19,120.57x = 28,688.21 × 9,259.09
  4. Step 4: Simplify right side
    19,120.57x = 265,626,718.33
  5. Step 5: Solve for x
    x = 265,626,718.33/19,120.57
  6. Step 6: Final answer
    x = 13,892.20

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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.