Home / 30,297.12-45,419.52-12,779.52

Finding the Fourth Proportional to 30,297.12, 45,419.52 and 12,779.52

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Solution

The fourth proportional to 30,297.12, 45,419.52 and 12,779.52 is: 19,158.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,297.12 : 45,419.52 = 12,779.52 : x
  2. Step 2: Convert to fraction form
    30,297.12/45,419.52 = 12,779.52/x
  3. Step 3: Cross multiply
    30,297.12x = 45,419.52 × 12,779.52
  4. Step 4: Simplify right side
    30,297.12x = 580,439,664.23
  5. Step 5: Solve for x
    x = 580,439,664.23/30,297.12
  6. Step 6: Final answer
    x = 19,158.25

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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.