Home / 19,785.05-29,619.93-10,402.82

Finding the Fourth Proportional to 19,785.05, 29,619.93 and 10,402.82

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Solution

The fourth proportional to 19,785.05, 29,619.93 and 10,402.82 is: 15,573.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.05 : 29,619.93 = 10,402.82 : x
  2. Step 2: Convert to fraction form
    19,785.05/29,619.93 = 10,402.82/x
  3. Step 3: Cross multiply
    19,785.05x = 29,619.93 × 10,402.82
  4. Step 4: Simplify right side
    19,785.05x = 308,130,800.20
  5. Step 5: Solve for x
    x = 308,130,800.20/19,785.05
  6. Step 6: Final answer
    x = 15,573.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.