Home / 19,109.39-28,679.88-9,756.32

Finding the Fourth Proportional to 19,109.39, 28,679.88 and 9,756.32

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Solution

The fourth proportional to 19,109.39, 28,679.88 and 9,756.32 is: 14,642.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.39 : 28,679.88 = 9,756.32 : x
  2. Step 2: Convert to fraction form
    19,109.39/28,679.88 = 9,756.32/x
  3. Step 3: Cross multiply
    19,109.39x = 28,679.88 × 9,756.32
  4. Step 4: Simplify right side
    19,109.39x = 279,810,086.84
  5. Step 5: Solve for x
    x = 279,810,086.84/19,109.39
  6. Step 6: Final answer
    x = 14,642.54

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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.