Home / 30,428.85-45,649.46-12,898.63

Finding the Fourth Proportional to 30,428.85, 45,649.46 and 12,898.63

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Solution

The fourth proportional to 30,428.85, 45,649.46 and 12,898.63 is: 19,350.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.85 : 45,649.46 = 12,898.63 : x
  2. Step 2: Convert to fraction form
    30,428.85/45,649.46 = 12,898.63/x
  3. Step 3: Cross multiply
    30,428.85x = 45,649.46 × 12,898.63
  4. Step 4: Simplify right side
    30,428.85x = 588,815,494.24
  5. Step 5: Solve for x
    x = 588,815,494.24/30,428.85
  6. Step 6: Final answer
    x = 19,350.57

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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.