Home / 20,158.16-27,818.28-11,205.45

Finding the Fourth Proportional to 20,158.16, 27,818.28 and 11,205.45

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Solution

The fourth proportional to 20,158.16, 27,818.28 and 11,205.45 is: 15,463.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.16 : 27,818.28 = 11,205.45 : x
  2. Step 2: Convert to fraction form
    20,158.16/27,818.28 = 11,205.45/x
  3. Step 3: Cross multiply
    20,158.16x = 27,818.28 × 11,205.45
  4. Step 4: Simplify right side
    20,158.16x = 311,716,345.63
  5. Step 5: Solve for x
    x = 311,716,345.63/20,158.16
  6. Step 6: Final answer
    x = 15,463.54

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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.