Home / 28,120.34-42,180.48-11,488.19

Finding the Fourth Proportional to 28,120.34, 42,180.48 and 11,488.19

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Solution

The fourth proportional to 28,120.34, 42,180.48 and 11,488.19 is: 17,232.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.34 : 42,180.48 = 11,488.19 : x
  2. Step 2: Convert to fraction form
    28,120.34/42,180.48 = 11,488.19/x
  3. Step 3: Cross multiply
    28,120.34x = 42,180.48 × 11,488.19
  4. Step 4: Simplify right side
    28,120.34x = 484,577,368.53
  5. Step 5: Solve for x
    x = 484,577,368.53/28,120.34
  6. Step 6: Final answer
    x = 17,232.27

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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.