Home / 13,899.79-19,162.64-8,792.76

Finding the Fourth Proportional to 13,899.79, 19,162.64 and 8,792.76

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Solution

The fourth proportional to 13,899.79, 19,162.64 and 8,792.76 is: 12,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,899.79 : 19,162.64 = 8,792.76 : x
  2. Step 2: Convert to fraction form
    13,899.79/19,162.64 = 8,792.76/x
  3. Step 3: Cross multiply
    13,899.79x = 19,162.64 × 8,792.76
  4. Step 4: Simplify right side
    13,899.79x = 168,492,542.39
  5. Step 5: Solve for x
    x = 168,492,542.39/13,899.79
  6. Step 6: Final answer
    x = 12,121.95

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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.