Home / 28,011.91-38,655.94-15,265.21

Finding the Fourth Proportional to 28,011.91, 38,655.94 and 15,265.21

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Solution

The fourth proportional to 28,011.91, 38,655.94 and 15,265.21 is: 21,065.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.91 : 38,655.94 = 15,265.21 : x
  2. Step 2: Convert to fraction form
    28,011.91/38,655.94 = 15,265.21/x
  3. Step 3: Cross multiply
    28,011.91x = 38,655.94 × 15,265.21
  4. Step 4: Simplify right side
    28,011.91x = 590,090,848.57
  5. Step 5: Solve for x
    x = 590,090,848.57/28,011.91
  6. Step 6: Final answer
    x = 21,065.71

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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.