Home / 13,116.98-18,101.86-7,148.84

Finding the Fourth Proportional to 13,116.98, 18,101.86 and 7,148.84

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Solution

The fourth proportional to 13,116.98, 18,101.86 and 7,148.84 is: 9,865.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.98 : 18,101.86 = 7,148.84 : x
  2. Step 2: Convert to fraction form
    13,116.98/18,101.86 = 7,148.84/x
  3. Step 3: Cross multiply
    13,116.98x = 18,101.86 × 7,148.84
  4. Step 4: Simplify right side
    13,116.98x = 129,407,300.84
  5. Step 5: Solve for x
    x = 129,407,300.84/13,116.98
  6. Step 6: Final answer
    x = 9,865.63

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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.