Home / 19,639.58-29,471.80-7,158.38

Finding the Fourth Proportional to 19,639.58, 29,471.80 and 7,158.38

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Solution

The fourth proportional to 19,639.58, 29,471.80 and 7,158.38 is: 10,742.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.58 : 29,471.80 = 7,158.38 : x
  2. Step 2: Convert to fraction form
    19,639.58/29,471.80 = 7,158.38/x
  3. Step 3: Cross multiply
    19,639.58x = 29,471.80 × 7,158.38
  4. Step 4: Simplify right side
    19,639.58x = 210,970,343.68
  5. Step 5: Solve for x
    x = 210,970,343.68/19,639.58
  6. Step 6: Final answer
    x = 10,742.10

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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.