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Finding the Fourth Proportional to 12,607.40, 18,885.62 and 6,358.72

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Solution

The fourth proportional to 12,607.40, 18,885.62 and 6,358.72 is: 9,525.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.40 : 18,885.62 = 6,358.72 : x
  2. Step 2: Convert to fraction form
    12,607.40/18,885.62 = 6,358.72/x
  3. Step 3: Cross multiply
    12,607.40x = 18,885.62 × 6,358.72
  4. Step 4: Simplify right side
    12,607.40x = 120,088,369.61
  5. Step 5: Solve for x
    x = 120,088,369.61/12,607.40
  6. Step 6: Final answer
    x = 9,525.23

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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.