Home / 12,429.72-18,526.32-11,729.88

Finding the Fourth Proportional to 12,429.72, 18,526.32 and 11,729.88

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Solution

The fourth proportional to 12,429.72, 18,526.32 and 11,729.88 is: 17,483.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.72 : 18,526.32 = 11,729.88 : x
  2. Step 2: Convert to fraction form
    12,429.72/18,526.32 = 11,729.88/x
  3. Step 3: Cross multiply
    12,429.72x = 18,526.32 × 11,729.88
  4. Step 4: Simplify right side
    12,429.72x = 217,311,510.44
  5. Step 5: Solve for x
    x = 217,311,510.44/12,429.72
  6. Step 6: Final answer
    x = 17,483.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.