Home / 30,409.12-45,587.04-12,891.52

Finding the Fourth Proportional to 30,409.12, 45,587.04 and 12,891.52

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Solution

The fourth proportional to 30,409.12, 45,587.04 and 12,891.52 is: 19,325.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,409.12 : 45,587.04 = 12,891.52 : x
  2. Step 2: Convert to fraction form
    30,409.12/45,587.04 = 12,891.52/x
  3. Step 3: Cross multiply
    30,409.12x = 45,587.04 × 12,891.52
  4. Step 4: Simplify right side
    30,409.12x = 587,686,237.90
  5. Step 5: Solve for x
    x = 587,686,237.90/30,409.12
  6. Step 6: Final answer
    x = 19,325.99

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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.