Home / 28,287.24-42,429.54-11,643.12

Finding the Fourth Proportional to 28,287.24, 42,429.54 and 11,643.12

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Solution

The fourth proportional to 28,287.24, 42,429.54 and 11,643.12 is: 17,464.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,287.24 : 42,429.54 = 11,643.12 : x
  2. Step 2: Convert to fraction form
    28,287.24/42,429.54 = 11,643.12/x
  3. Step 3: Cross multiply
    28,287.24x = 42,429.54 × 11,643.12
  4. Step 4: Simplify right side
    28,287.24x = 494,012,225.76
  5. Step 5: Solve for x
    x = 494,012,225.76/28,287.24
  6. Step 6: Final answer
    x = 17,464.14

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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.