Home / 19,620.32-27,075.45-11,123.21

Finding the Fourth Proportional to 19,620.32, 27,075.45 and 11,123.21

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Solution

The fourth proportional to 19,620.32, 27,075.45 and 11,123.21 is: 15,349.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.32 : 27,075.45 = 11,123.21 : x
  2. Step 2: Convert to fraction form
    19,620.32/27,075.45 = 11,123.21/x
  3. Step 3: Cross multiply
    19,620.32x = 27,075.45 × 11,123.21
  4. Step 4: Simplify right side
    19,620.32x = 301,165,780.82
  5. Step 5: Solve for x
    x = 301,165,780.82/19,620.32
  6. Step 6: Final answer
    x = 15,349.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.