Home / 28,712.31-39,622.24-15,964.83

Finding the Fourth Proportional to 28,712.31, 39,622.24 and 15,964.83

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Solution

The fourth proportional to 28,712.31, 39,622.24 and 15,964.83 is: 22,031.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.31 : 39,622.24 = 15,964.83 : x
  2. Step 2: Convert to fraction form
    28,712.31/39,622.24 = 15,964.83/x
  3. Step 3: Cross multiply
    28,712.31x = 39,622.24 × 15,964.83
  4. Step 4: Simplify right side
    28,712.31x = 632,562,325.82
  5. Step 5: Solve for x
    x = 632,562,325.82/28,712.31
  6. Step 6: Final answer
    x = 22,031.05

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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.