Home / 13,336.65-20,011.95-8,655.55

Finding the Fourth Proportional to 13,336.65, 20,011.95 and 8,655.55

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Solution

The fourth proportional to 13,336.65, 20,011.95 and 8,655.55 is: 12,987.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,336.65 : 20,011.95 = 8,655.55 : x
  2. Step 2: Convert to fraction form
    13,336.65/20,011.95 = 8,655.55/x
  3. Step 3: Cross multiply
    13,336.65x = 20,011.95 × 8,655.55
  4. Step 4: Simplify right side
    13,336.65x = 173,214,433.82
  5. Step 5: Solve for x
    x = 173,214,433.82/13,336.65
  6. Step 6: Final answer
    x = 12,987.85

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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.