Home / 30,128.80-45,192.72-9,352.32

Finding the Fourth Proportional to 30,128.80, 45,192.72 and 9,352.32

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Solution

The fourth proportional to 30,128.80, 45,192.72 and 9,352.32 is: 14,028.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,128.80 : 45,192.72 = 9,352.32 : x
  2. Step 2: Convert to fraction form
    30,128.80/45,192.72 = 9,352.32/x
  3. Step 3: Cross multiply
    30,128.80x = 45,192.72 × 9,352.32
  4. Step 4: Simplify right side
    30,128.80x = 422,656,779.11
  5. Step 5: Solve for x
    x = 422,656,779.11/30,128.80
  6. Step 6: Final answer
    x = 14,028.33

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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.