Home / 30,070.80-45,111.74-12,542.14

Finding the Fourth Proportional to 30,070.80, 45,111.74 and 12,542.14

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Solution

The fourth proportional to 30,070.80, 45,111.74 and 12,542.14 is: 18,815.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,070.80 : 45,111.74 = 12,542.14 : x
  2. Step 2: Convert to fraction form
    30,070.80/45,111.74 = 12,542.14/x
  3. Step 3: Cross multiply
    30,070.80x = 45,111.74 × 12,542.14
  4. Step 4: Simplify right side
    30,070.80x = 565,797,758.72
  5. Step 5: Solve for x
    x = 565,797,758.72/30,070.80
  6. Step 6: Final answer
    x = 18,815.52

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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.