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Finding the Fourth Proportional to 14,417.92, 19,894.18 and 8,130.30

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Solution

The fourth proportional to 14,417.92, 19,894.18 and 8,130.30 is: 11,218.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,417.92 : 19,894.18 = 8,130.30 : x
  2. Step 2: Convert to fraction form
    14,417.92/19,894.18 = 8,130.30/x
  3. Step 3: Cross multiply
    14,417.92x = 19,894.18 × 8,130.30
  4. Step 4: Simplify right side
    14,417.92x = 161,745,651.65
  5. Step 5: Solve for x
    x = 161,745,651.65/14,417.92
  6. Step 6: Final answer
    x = 11,218.38

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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.