Home / 13,428.81-20,143.19-4,663.80

Finding the Fourth Proportional to 13,428.81, 20,143.19 and 4,663.80

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Solution

The fourth proportional to 13,428.81, 20,143.19 and 4,663.80 is: 6,995.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.81 : 20,143.19 = 4,663.80 : x
  2. Step 2: Convert to fraction form
    13,428.81/20,143.19 = 4,663.80/x
  3. Step 3: Cross multiply
    13,428.81x = 20,143.19 × 4,663.80
  4. Step 4: Simplify right side
    13,428.81x = 93,943,708.81
  5. Step 5: Solve for x
    x = 93,943,708.81/13,428.81
  6. Step 6: Final answer
    x = 6,995.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.