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Finding the Fourth Proportional to 14,203.71, 19,601.12 and 7,830.41

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Solution

The fourth proportional to 14,203.71, 19,601.12 and 7,830.41 is: 10,805.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,203.71 : 19,601.12 = 7,830.41 : x
  2. Step 2: Convert to fraction form
    14,203.71/19,601.12 = 7,830.41/x
  3. Step 3: Cross multiply
    14,203.71x = 19,601.12 × 7,830.41
  4. Step 4: Simplify right side
    14,203.71x = 153,484,668.90
  5. Step 5: Solve for x
    x = 153,484,668.90/14,203.71
  6. Step 6: Final answer
    x = 10,805.96

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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.