Home / 30,515.87-45,736.85-12,948.80

Finding the Fourth Proportional to 30,515.87, 45,736.85 and 12,948.80

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Solution

The fourth proportional to 30,515.87, 45,736.85 and 12,948.80 is: 19,407.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.87 : 45,736.85 = 12,948.80 : x
  2. Step 2: Convert to fraction form
    30,515.87/45,736.85 = 12,948.80/x
  3. Step 3: Cross multiply
    30,515.87x = 45,736.85 × 12,948.80
  4. Step 4: Simplify right side
    30,515.87x = 592,237,029.85
  5. Step 5: Solve for x
    x = 592,237,029.85/30,515.87
  6. Step 6: Final answer
    x = 19,407.51

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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.