Home / 13,928.58-19,221.84-7,960.50

Finding the Fourth Proportional to 13,928.58, 19,221.84 and 7,960.50

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Solution

The fourth proportional to 13,928.58, 19,221.84 and 7,960.50 is: 10,985.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.58 : 19,221.84 = 7,960.50 : x
  2. Step 2: Convert to fraction form
    13,928.58/19,221.84 = 7,960.50/x
  3. Step 3: Cross multiply
    13,928.58x = 19,221.84 × 7,960.50
  4. Step 4: Simplify right side
    13,928.58x = 153,015,457.32
  5. Step 5: Solve for x
    x = 153,015,457.32/13,928.58
  6. Step 6: Final answer
    x = 10,985.72

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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.