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Finding the Fourth Proportional to 18,279.86, 27,430.71 and 16,792.70

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Solution

The fourth proportional to 18,279.86, 27,430.71 and 16,792.70 is: 25,199.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.86 : 27,430.71 = 16,792.70 : x
  2. Step 2: Convert to fraction form
    18,279.86/27,430.71 = 16,792.70/x
  3. Step 3: Cross multiply
    18,279.86x = 27,430.71 × 16,792.70
  4. Step 4: Simplify right side
    18,279.86x = 460,635,683.82
  5. Step 5: Solve for x
    x = 460,635,683.82/18,279.86
  6. Step 6: Final answer
    x = 25,199.08

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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.