Home / 20,153.16-27,810.29-11,200.43

Finding the Fourth Proportional to 20,153.16, 27,810.29 and 11,200.43

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Solution

The fourth proportional to 20,153.16, 27,810.29 and 11,200.43 is: 15,455.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.16 : 27,810.29 = 11,200.43 : x
  2. Step 2: Convert to fraction form
    20,153.16/27,810.29 = 11,200.43/x
  3. Step 3: Cross multiply
    20,153.16x = 27,810.29 × 11,200.43
  4. Step 4: Simplify right side
    20,153.16x = 311,487,011.37
  5. Step 5: Solve for x
    x = 311,487,011.37/20,153.16
  6. Step 6: Final answer
    x = 15,455.99

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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.