Home / 12,429.24-18,627.30-10,865.40

Finding the Fourth Proportional to 12,429.24, 18,627.30 and 10,865.40

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Solution

The fourth proportional to 12,429.24, 18,627.30 and 10,865.40 is: 16,283.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.24 : 18,627.30 = 10,865.40 : x
  2. Step 2: Convert to fraction form
    12,429.24/18,627.30 = 10,865.40/x
  3. Step 3: Cross multiply
    12,429.24x = 18,627.30 × 10,865.40
  4. Step 4: Simplify right side
    12,429.24x = 202,393,065.42
  5. Step 5: Solve for x
    x = 202,393,065.42/12,429.24
  6. Step 6: Final answer
    x = 16,283.62

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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.