Home / 19,120.56-28,688.20-9,259.08

Finding the Fourth Proportional to 19,120.56, 28,688.20 and 9,259.08

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Solution

The fourth proportional to 19,120.56, 28,688.20 and 9,259.08 is: 13,892.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.56 : 28,688.20 = 9,259.08 : x
  2. Step 2: Convert to fraction form
    19,120.56/28,688.20 = 9,259.08/x
  3. Step 3: Cross multiply
    19,120.56x = 28,688.20 × 9,259.08
  4. Step 4: Simplify right side
    19,120.56x = 265,626,338.86
  5. Step 5: Solve for x
    x = 265,626,338.86/19,120.56
  6. Step 6: Final answer
    x = 13,892.18

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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.