Home / 28,521.01-39,358.69-15,774.74

Finding the Fourth Proportional to 28,521.01, 39,358.69 and 15,774.74

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Solution

The fourth proportional to 28,521.01, 39,358.69 and 15,774.74 is: 21,768.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.01 : 39,358.69 = 15,774.74 : x
  2. Step 2: Convert to fraction form
    28,521.01/39,358.69 = 15,774.74/x
  3. Step 3: Cross multiply
    28,521.01x = 39,358.69 × 15,774.74
  4. Step 4: Simplify right side
    28,521.01x = 620,873,101.49
  5. Step 5: Solve for x
    x = 620,873,101.49/28,521.01
  6. Step 6: Final answer
    x = 21,768.97

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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.