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Finding the Fourth Proportional to 14,305.92, 19,737.45 and 8,638.52

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Solution

The fourth proportional to 14,305.92, 19,737.45 and 8,638.52 is: 11,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,305.92 : 19,737.45 = 8,638.52 : x
  2. Step 2: Convert to fraction form
    14,305.92/19,737.45 = 8,638.52/x
  3. Step 3: Cross multiply
    14,305.92x = 19,737.45 × 8,638.52
  4. Step 4: Simplify right side
    14,305.92x = 170,502,275.22
  5. Step 5: Solve for x
    x = 170,502,275.22/14,305.92
  6. Step 6: Final answer
    x = 11,918.30

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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.