Home / 21,530.67-29,710.85-12,100.65

Finding the Fourth Proportional to 21,530.67, 29,710.85 and 12,100.65

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Solution

The fourth proportional to 21,530.67, 29,710.85 and 12,100.65 is: 16,698.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,530.67 : 29,710.85 = 12,100.65 : x
  2. Step 2: Convert to fraction form
    21,530.67/29,710.85 = 12,100.65/x
  3. Step 3: Cross multiply
    21,530.67x = 29,710.85 × 12,100.65
  4. Step 4: Simplify right side
    21,530.67x = 359,520,536.55
  5. Step 5: Solve for x
    x = 359,520,536.55/21,530.67
  6. Step 6: Final answer
    x = 16,698.07

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1.5x scale

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.