Home / 13,519.72-18,681.08-10,402.84

Finding the Fourth Proportional to 13,519.72, 18,681.08 and 10,402.84

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Solution

The fourth proportional to 13,519.72, 18,681.08 and 10,402.84 is: 14,374.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.72 : 18,681.08 = 10,402.84 : x
  2. Step 2: Convert to fraction form
    13,519.72/18,681.08 = 10,402.84/x
  3. Step 3: Cross multiply
    13,519.72x = 18,681.08 × 10,402.84
  4. Step 4: Simplify right side
    13,519.72x = 194,336,286.27
  5. Step 5: Solve for x
    x = 194,336,286.27/13,519.72
  6. Step 6: Final answer
    x = 14,374.28

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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.