Home / 28,011.20-38,655.38-15,435.94

Finding the Fourth Proportional to 28,011.20, 38,655.38 and 15,435.94

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Solution

The fourth proportional to 28,011.20, 38,655.38 and 15,435.94 is: 21,301.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.20 : 38,655.38 = 15,435.94 : x
  2. Step 2: Convert to fraction form
    28,011.20/38,655.38 = 15,435.94/x
  3. Step 3: Cross multiply
    28,011.20x = 38,655.38 × 15,435.94
  4. Step 4: Simplify right side
    28,011.20x = 596,682,126.36
  5. Step 5: Solve for x
    x = 596,682,126.36/28,011.20
  6. Step 6: Final answer
    x = 21,301.56

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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.