Home / 20,156.07-27,816.30-11,203.29

Finding the Fourth Proportional to 20,156.07, 27,816.30 and 11,203.29

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Solution

The fourth proportional to 20,156.07, 27,816.30 and 11,203.29 is: 15,461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.07 : 27,816.30 = 11,203.29 : x
  2. Step 2: Convert to fraction form
    20,156.07/27,816.30 = 11,203.29/x
  3. Step 3: Cross multiply
    20,156.07x = 27,816.30 × 11,203.29
  4. Step 4: Simplify right side
    20,156.07x = 311,634,075.63
  5. Step 5: Solve for x
    x = 311,634,075.63/20,156.07
  6. Step 6: Final answer
    x = 15,461.05

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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.