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Finding the Fourth Proportional to 13,607.46, 18,776.88 and 8,303.58

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Solution

The fourth proportional to 13,607.46, 18,776.88 and 8,303.58 is: 11,458.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.46 : 18,776.88 = 8,303.58 : x
  2. Step 2: Convert to fraction form
    13,607.46/18,776.88 = 8,303.58/x
  3. Step 3: Cross multiply
    13,607.46x = 18,776.88 × 8,303.58
  4. Step 4: Simplify right side
    13,607.46x = 155,915,325.23
  5. Step 5: Solve for x
    x = 155,915,325.23/13,607.46
  6. Step 6: Final answer
    x = 11,458.08

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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.