Home / 13,116.48-18,101.07-7,148.58

Finding the Fourth Proportional to 13,116.48, 18,101.07 and 7,148.58

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Solution

The fourth proportional to 13,116.48, 18,101.07 and 7,148.58 is: 9,865.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.48 : 18,101.07 = 7,148.58 : x
  2. Step 2: Convert to fraction form
    13,116.48/18,101.07 = 7,148.58/x
  3. Step 3: Cross multiply
    13,116.48x = 18,101.07 × 7,148.58
  4. Step 4: Simplify right side
    13,116.48x = 129,396,946.98
  5. Step 5: Solve for x
    x = 129,396,946.98/13,116.48
  6. Step 6: Final answer
    x = 9,865.22

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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.