Home / 19,353.58-28,981.13-12,759.76

Finding the Fourth Proportional to 19,353.58, 28,981.13 and 12,759.76

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Solution

The fourth proportional to 19,353.58, 28,981.13 and 12,759.76 is: 19,107.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,353.58 : 28,981.13 = 12,759.76 : x
  2. Step 2: Convert to fraction form
    19,353.58/28,981.13 = 12,759.76/x
  3. Step 3: Cross multiply
    19,353.58x = 28,981.13 × 12,759.76
  4. Step 4: Simplify right side
    19,353.58x = 369,792,263.33
  5. Step 5: Solve for x
    x = 369,792,263.33/19,353.58
  6. Step 6: Final answer
    x = 19,107.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.