Home / 14,230.71-19,638.45-7,857.18

Finding the Fourth Proportional to 14,230.71, 19,638.45 and 7,857.18

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Solution

The fourth proportional to 14,230.71, 19,638.45 and 7,857.18 is: 10,842.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,230.71 : 19,638.45 = 7,857.18 : x
  2. Step 2: Convert to fraction form
    14,230.71/19,638.45 = 7,857.18/x
  3. Step 3: Cross multiply
    14,230.71x = 19,638.45 × 7,857.18
  4. Step 4: Simplify right side
    14,230.71x = 154,302,836.57
  5. Step 5: Solve for x
    x = 154,302,836.57/14,230.71
  6. Step 6: Final answer
    x = 10,842.95

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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.