Home / 28,421.74-39,221.48-15,676.10

Finding the Fourth Proportional to 28,421.74, 39,221.48 and 15,676.10

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Solution

The fourth proportional to 28,421.74, 39,221.48 and 15,676.10 is: 21,632.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.74 : 39,221.48 = 15,676.10 : x
  2. Step 2: Convert to fraction form
    28,421.74/39,221.48 = 15,676.10/x
  3. Step 3: Cross multiply
    28,421.74x = 39,221.48 × 15,676.10
  4. Step 4: Simplify right side
    28,421.74x = 614,839,842.63
  5. Step 5: Solve for x
    x = 614,839,842.63/28,421.74
  6. Step 6: Final answer
    x = 21,632.73

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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.