Home / 20,964.24-28,915.99-14,238.18

Finding the Fourth Proportional to 20,964.24, 28,915.99 and 14,238.18

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Solution

The fourth proportional to 20,964.24, 28,915.99 and 14,238.18 is: 19,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.24 : 28,915.99 = 14,238.18 : x
  2. Step 2: Convert to fraction form
    20,964.24/28,915.99 = 14,238.18/x
  3. Step 3: Cross multiply
    20,964.24x = 28,915.99 × 14,238.18
  4. Step 4: Simplify right side
    20,964.24x = 411,711,070.50
  5. Step 5: Solve for x
    x = 411,711,070.50/20,964.24
  6. Step 6: Final answer
    x = 19,638.73

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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.