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Finding the Fourth Proportional to 18,690, 25,792.68 and 10,733.64

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Solution

The fourth proportional to 18,690, 25,792.68 and 10,733.64 is: 14,812.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690 : 25,792.68 = 10,733.64 : x
  2. Step 2: Convert to fraction form
    18,690/25,792.68 = 10,733.64/x
  3. Step 3: Cross multiply
    18,690x = 25,792.68 × 10,733.64
  4. Step 4: Simplify right side
    18,690x = 276,849,341.76
  5. Step 5: Solve for x
    x = 276,849,341.76/18,690
  6. Step 6: Final answer
    x = 14,812.70

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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.