Home / 13,257,730.21-18,285,302.90-8,613,011.76

Finding the Fourth Proportional to 13,257,730.21, 18,285,302.90 and 8,613,011.76

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Solution

The fourth proportional to 13,257,730.21, 18,285,302.90 and 8,613,011.76 is: 11,879,222.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257,730.21 : 18,285,302.90 = 8,613,011.76 : x
  2. Step 2: Convert to fraction form
    13,257,730.21/18,285,302.90 = 8,613,011.76/x
  3. Step 3: Cross multiply
    13,257,730.21x = 18,285,302.90 × 8,613,011.76
  4. Step 4: Simplify right side
    13,257,730.21x = 157,491,528,869,797.03
  5. Step 5: Solve for x
    x = 157,491,528,869,797.03/13,257,730.21
  6. Step 6: Final answer
    x = 11,879,222.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.