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Finding the Fourth Proportional to 14,359.61, 19,822.52 and 8,390.32

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Solution

The fourth proportional to 14,359.61, 19,822.52 and 8,390.32 is: 11,582.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,359.61 : 19,822.52 = 8,390.32 : x
  2. Step 2: Convert to fraction form
    14,359.61/19,822.52 = 8,390.32/x
  3. Step 3: Cross multiply
    14,359.61x = 19,822.52 × 8,390.32
  4. Step 4: Simplify right side
    14,359.61x = 166,317,257.43
  5. Step 5: Solve for x
    x = 166,317,257.43/14,359.61
  6. Step 6: Final answer
    x = 11,582.29

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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.