Home / 13,988.82-19,305.48-7,701.60

Finding the Fourth Proportional to 13,988.82, 19,305.48 and 7,701.60

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Solution

The fourth proportional to 13,988.82, 19,305.48 and 7,701.60 is: 10,628.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.82 : 19,305.48 = 7,701.60 : x
  2. Step 2: Convert to fraction form
    13,988.82/19,305.48 = 7,701.60/x
  3. Step 3: Cross multiply
    13,988.82x = 19,305.48 × 7,701.60
  4. Step 4: Simplify right side
    13,988.82x = 148,683,084.77
  5. Step 5: Solve for x
    x = 148,683,084.77/13,988.82
  6. Step 6: Final answer
    x = 10,628.71

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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.