Home / 13,686.08-18,897.60-10,186.88

Finding the Fourth Proportional to 13,686.08, 18,897.60 and 10,186.88

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Solution

The fourth proportional to 13,686.08, 18,897.60 and 10,186.88 is: 14,065.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.08 : 18,897.60 = 10,186.88 : x
  2. Step 2: Convert to fraction form
    13,686.08/18,897.60 = 10,186.88/x
  3. Step 3: Cross multiply
    13,686.08x = 18,897.60 × 10,186.88
  4. Step 4: Simplify right side
    13,686.08x = 192,507,583.49
  5. Step 5: Solve for x
    x = 192,507,583.49/13,686.08
  6. Step 6: Final answer
    x = 14,065.94

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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.