Home / 28,141.30-42,219.63-9,424.42

Finding the Fourth Proportional to 28,141.30, 42,219.63 and 9,424.42

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Solution

The fourth proportional to 28,141.30, 42,219.63 and 9,424.42 is: 14,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,141.30 : 42,219.63 = 9,424.42 : x
  2. Step 2: Convert to fraction form
    28,141.30/42,219.63 = 9,424.42/x
  3. Step 3: Cross multiply
    28,141.30x = 42,219.63 × 9,424.42
  4. Step 4: Simplify right side
    28,141.30x = 397,895,525.36
  5. Step 5: Solve for x
    x = 397,895,525.36/28,141.30
  6. Step 6: Final answer
    x = 14,139.20

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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.