Home / 20,405,174.52-28,162,202.24-15,502,328.76

Finding the Fourth Proportional to 20,405,174.52, 28,162,202.24 and 15,502,328.76

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Solution

The fourth proportional to 20,405,174.52, 28,162,202.24 and 15,502,328.76 is: 21,395,539.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405,174.52 : 28,162,202.24 = 15,502,328.76 : x
  2. Step 2: Convert to fraction form
    20,405,174.52/28,162,202.24 = 15,502,328.76/x
  3. Step 3: Cross multiply
    20,405,174.52x = 28,162,202.24 × 15,502,328.76
  4. Step 4: Simplify right side
    20,405,174.52x = 436,579,717,730,088.38
  5. Step 5: Solve for x
    x = 436,579,717,730,088.38/20,405,174.52
  6. Step 6: Final answer
    x = 21,395,539.51

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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.