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Finding the Fourth Proportional to 18,690.68, 25,792.98 and 10,307

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Solution

The fourth proportional to 18,690.68, 25,792.98 and 10,307 is: 14,223.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.68 : 25,792.98 = 10,307 : x
  2. Step 2: Convert to fraction form
    18,690.68/25,792.98 = 10,307/x
  3. Step 3: Cross multiply
    18,690.68x = 25,792.98 × 10,307
  4. Step 4: Simplify right side
    18,690.68x = 265,848,244.86
  5. Step 5: Solve for x
    x = 265,848,244.86/18,690.68
  6. Step 6: Final answer
    x = 14,223.57

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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.