Home / 28,178.30-38,885.18-18,763.94

Finding the Fourth Proportional to 28,178.30, 38,885.18 and 18,763.94

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Solution

The fourth proportional to 28,178.30, 38,885.18 and 18,763.94 is: 25,893.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.30 : 38,885.18 = 18,763.94 : x
  2. Step 2: Convert to fraction form
    28,178.30/38,885.18 = 18,763.94/x
  3. Step 3: Cross multiply
    28,178.30x = 38,885.18 × 18,763.94
  4. Step 4: Simplify right side
    28,178.30x = 729,639,184.41
  5. Step 5: Solve for x
    x = 729,639,184.41/28,178.30
  6. Step 6: Final answer
    x = 25,893.66

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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.