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Finding the Fourth Proportional to 12,656.64, 18,950.40 and 8,503.04

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Solution

The fourth proportional to 12,656.64, 18,950.40 and 8,503.04 is: 12,731.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.64 : 18,950.40 = 8,503.04 : x
  2. Step 2: Convert to fraction form
    12,656.64/18,950.40 = 8,503.04/x
  3. Step 3: Cross multiply
    12,656.64x = 18,950.40 × 8,503.04
  4. Step 4: Simplify right side
    12,656.64x = 161,136,009.22
  5. Step 5: Solve for x
    x = 161,136,009.22/12,656.64
  6. Step 6: Final answer
    x = 12,731.34

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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.