Home / 30,327.93-45,486.77-8,139.47

Finding the Fourth Proportional to 30,327.93, 45,486.77 and 8,139.47

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Solution

The fourth proportional to 30,327.93, 45,486.77 and 8,139.47 is: 12,207.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,327.93 : 45,486.77 = 8,139.47 : x
  2. Step 2: Convert to fraction form
    30,327.93/45,486.77 = 8,139.47/x
  3. Step 3: Cross multiply
    30,327.93x = 45,486.77 × 8,139.47
  4. Step 4: Simplify right side
    30,327.93x = 370,237,931.68
  5. Step 5: Solve for x
    x = 370,237,931.68/30,327.93
  6. Step 6: Final answer
    x = 12,207.82

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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.