Home / 37,690.40-51,981.52-28,279.84

Finding the Fourth Proportional to 37,690.40, 51,981.52 and 28,279.84

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Solution

The fourth proportional to 37,690.40, 51,981.52 and 28,279.84 is: 39,002.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,690.40 : 51,981.52 = 28,279.84 : x
  2. Step 2: Convert to fraction form
    37,690.40/51,981.52 = 28,279.84/x
  3. Step 3: Cross multiply
    37,690.40x = 51,981.52 × 28,279.84
  4. Step 4: Simplify right side
    37,690.40x = 1,470,029,068.56
  5. Step 5: Solve for x
    x = 1,470,029,068.56/37,690.40
  6. Step 6: Final answer
    x = 39,002.75

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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.