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Finding the Fourth Proportional to 14,488.64, 21,718.56 and 8,636.48

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Solution

The fourth proportional to 14,488.64, 21,718.56 and 8,636.48 is: 12,946.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,488.64 : 21,718.56 = 8,636.48 : x
  2. Step 2: Convert to fraction form
    14,488.64/21,718.56 = 8,636.48/x
  3. Step 3: Cross multiply
    14,488.64x = 21,718.56 × 8,636.48
  4. Step 4: Simplify right side
    14,488.64x = 187,571,909.07
  5. Step 5: Solve for x
    x = 187,571,909.07/14,488.64
  6. Step 6: Final answer
    x = 12,946.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.