Home / 13,011.20-19,516.80-4,246.40

Finding the Fourth Proportional to 13,011.20, 19,516.80 and 4,246.40

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Solution

The fourth proportional to 13,011.20, 19,516.80 and 4,246.40 is: 6,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.20 : 19,516.80 = 4,246.40 : x
  2. Step 2: Convert to fraction form
    13,011.20/19,516.80 = 4,246.40/x
  3. Step 3: Cross multiply
    13,011.20x = 19,516.80 × 4,246.40
  4. Step 4: Simplify right side
    13,011.20x = 82,876,139.52
  5. Step 5: Solve for x
    x = 82,876,139.52/13,011.20
  6. Step 6: Final answer
    x = 6,369.60

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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.