Home / 30,519.36-42,124.86-28,660.68

Finding the Fourth Proportional to 30,519.36, 42,124.86 and 28,660.68

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Solution

The fourth proportional to 30,519.36, 42,124.86 and 28,660.68 is: 39,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,519.36 : 42,124.86 = 28,660.68 : x
  2. Step 2: Convert to fraction form
    30,519.36/42,124.86 = 28,660.68/x
  3. Step 3: Cross multiply
    30,519.36x = 42,124.86 × 28,660.68
  4. Step 4: Simplify right side
    30,519.36x = 1,207,327,132.50
  5. Step 5: Solve for x
    x = 1,207,327,132.50/30,519.36
  6. Step 6: Final answer
    x = 39,559.39

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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.