Home / 28,416.79-39,214.87-15,671.10

Finding the Fourth Proportional to 28,416.79, 39,214.87 and 15,671.10

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Solution

The fourth proportional to 28,416.79, 39,214.87 and 15,671.10 is: 21,625.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,416.79 : 39,214.87 = 15,671.10 : x
  2. Step 2: Convert to fraction form
    28,416.79/39,214.87 = 15,671.10/x
  3. Step 3: Cross multiply
    28,416.79x = 39,214.87 × 15,671.10
  4. Step 4: Simplify right side
    28,416.79x = 614,540,257.14
  5. Step 5: Solve for x
    x = 614,540,257.14/28,416.79
  6. Step 6: Final answer
    x = 21,625.96

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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.