Home / 28,154.67-38,852.91-15,579.42

Finding the Fourth Proportional to 28,154.67, 38,852.91 and 15,579.42

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Solution

The fourth proportional to 28,154.67, 38,852.91 and 15,579.42 is: 21,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,154.67 : 38,852.91 = 15,579.42 : x
  2. Step 2: Convert to fraction form
    28,154.67/38,852.91 = 15,579.42/x
  3. Step 3: Cross multiply
    28,154.67x = 38,852.91 × 15,579.42
  4. Step 4: Simplify right side
    28,154.67x = 605,305,803.11
  5. Step 5: Solve for x
    x = 605,305,803.11/28,154.67
  6. Step 6: Final answer
    x = 21,499.30

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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.