Home / 12,637.12-18,956.48-3,872.16

Finding the Fourth Proportional to 12,637.12, 18,956.48 and 3,872.16

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Solution

The fourth proportional to 12,637.12, 18,956.48 and 3,872.16 is: 5,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,637.12 : 18,956.48 = 3,872.16 : x
  2. Step 2: Convert to fraction form
    12,637.12/18,956.48 = 3,872.16/x
  3. Step 3: Cross multiply
    12,637.12x = 18,956.48 × 3,872.16
  4. Step 4: Simplify right side
    12,637.12x = 73,402,523.60
  5. Step 5: Solve for x
    x = 73,402,523.60/12,637.12
  6. Step 6: Final answer
    x = 5,808.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.