Home / 28,472.76-39,291.84-15,725.22

Finding the Fourth Proportional to 28,472.76, 39,291.84 and 15,725.22

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Solution

The fourth proportional to 28,472.76, 39,291.84 and 15,725.22 is: 21,700.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.76 : 39,291.84 = 15,725.22 : x
  2. Step 2: Convert to fraction form
    28,472.76/39,291.84 = 15,725.22/x
  3. Step 3: Cross multiply
    28,472.76x = 39,291.84 × 15,725.22
  4. Step 4: Simplify right side
    28,472.76x = 617,872,828.20
  5. Step 5: Solve for x
    x = 617,872,828.20/28,472.76
  6. Step 6: Final answer
    x = 21,700.49

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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.