Home / 14,116.81-19,481.91-7,829.20

Finding the Fourth Proportional to 14,116.81, 19,481.91 and 7,829.20

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Solution

The fourth proportional to 14,116.81, 19,481.91 and 7,829.20 is: 10,804.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,116.81 : 19,481.91 = 7,829.20 : x
  2. Step 2: Convert to fraction form
    14,116.81/19,481.91 = 7,829.20/x
  3. Step 3: Cross multiply
    14,116.81x = 19,481.91 × 7,829.20
  4. Step 4: Simplify right side
    14,116.81x = 152,527,769.77
  5. Step 5: Solve for x
    x = 152,527,769.77/14,116.81
  6. Step 6: Final answer
    x = 10,804.69

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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.