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Finding the Fourth Proportional to 12,405.02, 18,607.52 and 7,208.06

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Solution

The fourth proportional to 12,405.02, 18,607.52 and 7,208.06 is: 10,812.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.02 : 18,607.52 = 7,208.06 : x
  2. Step 2: Convert to fraction form
    12,405.02/18,607.52 = 7,208.06/x
  3. Step 3: Cross multiply
    12,405.02x = 18,607.52 × 7,208.06
  4. Step 4: Simplify right side
    12,405.02x = 134,124,120.61
  5. Step 5: Solve for x
    x = 134,124,120.61/12,405.02
  6. Step 6: Final answer
    x = 10,812.08

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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.