Home / 28,358.28-39,134.01-15,783.03

Finding the Fourth Proportional to 28,358.28, 39,134.01 and 15,783.03

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Solution

The fourth proportional to 28,358.28, 39,134.01 and 15,783.03 is: 21,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.28 : 39,134.01 = 15,783.03 : x
  2. Step 2: Convert to fraction form
    28,358.28/39,134.01 = 15,783.03/x
  3. Step 3: Cross multiply
    28,358.28x = 39,134.01 × 15,783.03
  4. Step 4: Simplify right side
    28,358.28x = 617,653,253.85
  5. Step 5: Solve for x
    x = 617,653,253.85/28,358.28
  6. Step 6: Final answer
    x = 21,780.35

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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.