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Finding the Fourth Proportional to 14,007.50, 19,330.41 and 7,719.74

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Solution

The fourth proportional to 14,007.50, 19,330.41 and 7,719.74 is: 10,653.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.50 : 19,330.41 = 7,719.74 : x
  2. Step 2: Convert to fraction form
    14,007.50/19,330.41 = 7,719.74/x
  3. Step 3: Cross multiply
    14,007.50x = 19,330.41 × 7,719.74
  4. Step 4: Simplify right side
    14,007.50x = 149,225,739.29
  5. Step 5: Solve for x
    x = 149,225,739.29/14,007.50
  6. Step 6: Final answer
    x = 10,653.27

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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.