Home / 19,970.85-27,559.32-11,019.20

Finding the Fourth Proportional to 19,970.85, 27,559.32 and 11,019.20

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Solution

The fourth proportional to 19,970.85, 27,559.32 and 11,019.20 is: 15,206.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,970.85 : 27,559.32 = 11,019.20 : x
  2. Step 2: Convert to fraction form
    19,970.85/27,559.32 = 11,019.20/x
  3. Step 3: Cross multiply
    19,970.85x = 27,559.32 × 11,019.20
  4. Step 4: Simplify right side
    19,970.85x = 303,681,658.94
  5. Step 5: Solve for x
    x = 303,681,658.94/19,970.85
  6. Step 6: Final answer
    x = 15,206.25

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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.