Home / 14,271.20-21,431.10-10,140.20

Finding the Fourth Proportional to 14,271.20, 21,431.10 and 10,140.20

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Solution

The fourth proportional to 14,271.20, 21,431.10 and 10,140.20 is: 15,227.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,271.20 : 21,431.10 = 10,140.20 : x
  2. Step 2: Convert to fraction form
    14,271.20/21,431.10 = 10,140.20/x
  3. Step 3: Cross multiply
    14,271.20x = 21,431.10 × 10,140.20
  4. Step 4: Simplify right side
    14,271.20x = 217,315,640.22
  5. Step 5: Solve for x
    x = 217,315,640.22/14,271.20
  6. Step 6: Final answer
    x = 15,227.57

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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.