Home / 20,986.91-28,964.70-12,032.66

Finding the Fourth Proportional to 20,986.91, 28,964.70 and 12,032.66

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Solution

The fourth proportional to 20,986.91, 28,964.70 and 12,032.66 is: 16,606.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.91 : 28,964.70 = 12,032.66 : x
  2. Step 2: Convert to fraction form
    20,986.91/28,964.70 = 12,032.66/x
  3. Step 3: Cross multiply
    20,986.91x = 28,964.70 × 12,032.66
  4. Step 4: Simplify right side
    20,986.91x = 348,522,459.51
  5. Step 5: Solve for x
    x = 348,522,459.51/20,986.91
  6. Step 6: Final answer
    x = 16,606.66

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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.