Home / 18,965.10-26,173.08-13,931.49

Finding the Fourth Proportional to 18,965.10, 26,173.08 and 13,931.49

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Solution

The fourth proportional to 18,965.10, 26,173.08 and 13,931.49 is: 19,226.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.10 : 26,173.08 = 13,931.49 : x
  2. Step 2: Convert to fraction form
    18,965.10/26,173.08 = 13,931.49/x
  3. Step 3: Cross multiply
    18,965.10x = 26,173.08 × 13,931.49
  4. Step 4: Simplify right side
    18,965.10x = 364,630,002.29
  5. Step 5: Solve for x
    x = 364,630,002.29/18,965.10
  6. Step 6: Final answer
    x = 19,226.37

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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.