Home / 28,265.24-39,004.08-15,689

Finding the Fourth Proportional to 28,265.24, 39,004.08 and 15,689

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Solution

The fourth proportional to 28,265.24, 39,004.08 and 15,689 is: 21,649.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,265.24 : 39,004.08 = 15,689 : x
  2. Step 2: Convert to fraction form
    28,265.24/39,004.08 = 15,689/x
  3. Step 3: Cross multiply
    28,265.24x = 39,004.08 × 15,689
  4. Step 4: Simplify right side
    28,265.24x = 611,935,011.12
  5. Step 5: Solve for x
    x = 611,935,011.12/28,265.24
  6. Step 6: Final answer
    x = 21,649.74

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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.