Home / 30,170.60-45,195.50-14,391

Finding the Fourth Proportional to 30,170.60, 45,195.50 and 14,391

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Solution

The fourth proportional to 30,170.60, 45,195.50 and 14,391 is: 21,557.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,170.60 : 45,195.50 = 14,391 : x
  2. Step 2: Convert to fraction form
    30,170.60/45,195.50 = 14,391/x
  3. Step 3: Cross multiply
    30,170.60x = 45,195.50 × 14,391
  4. Step 4: Simplify right side
    30,170.60x = 650,408,440.50
  5. Step 5: Solve for x
    x = 650,408,440.50/30,170.60
  6. Step 6: Final answer
    x = 21,557.69

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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.