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Finding the Fourth Proportional to 13,386.98, 18,482.64 and 8,608.98

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Solution

The fourth proportional to 13,386.98, 18,482.64 and 8,608.98 is: 11,885.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.98 : 18,482.64 = 8,608.98 : x
  2. Step 2: Convert to fraction form
    13,386.98/18,482.64 = 8,608.98/x
  3. Step 3: Cross multiply
    13,386.98x = 18,482.64 × 8,608.98
  4. Step 4: Simplify right side
    13,386.98x = 159,116,678.11
  5. Step 5: Solve for x
    x = 159,116,678.11/13,386.98
  6. Step 6: Final answer
    x = 11,885.93

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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.