Home / 13,928.89-19,221.76-7,555.47

Finding the Fourth Proportional to 13,928.89, 19,221.76 and 7,555.47

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Solution

The fourth proportional to 13,928.89, 19,221.76 and 7,555.47 is: 10,426.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.89 : 19,221.76 = 7,555.47 : x
  2. Step 2: Convert to fraction form
    13,928.89/19,221.76 = 7,555.47/x
  3. Step 3: Cross multiply
    13,928.89x = 19,221.76 × 7,555.47
  4. Step 4: Simplify right side
    13,928.89x = 145,229,374.17
  5. Step 5: Solve for x
    x = 145,229,374.17/13,928.89
  6. Step 6: Final answer
    x = 10,426.48

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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.