Home / 31,089.60-46,634.40-19,279.80

Finding the Fourth Proportional to 31,089.60, 46,634.40 and 19,279.80

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Solution

The fourth proportional to 31,089.60, 46,634.40 and 19,279.80 is: 28,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,089.60 : 46,634.40 = 19,279.80 : x
  2. Step 2: Convert to fraction form
    31,089.60/46,634.40 = 19,279.80/x
  3. Step 3: Cross multiply
    31,089.60x = 46,634.40 × 19,279.80
  4. Step 4: Simplify right side
    31,089.60x = 899,101,905.12
  5. Step 5: Solve for x
    x = 899,101,905.12/31,089.60
  6. Step 6: Final answer
    x = 28,919.70

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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.