Home / 15,676.87-21,634.50-8,870.35

Finding the Fourth Proportional to 15,676.87, 21,634.50 and 8,870.35

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Solution

The fourth proportional to 15,676.87, 21,634.50 and 8,870.35 is: 12,241.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,676.87 : 21,634.50 = 8,870.35 : x
  2. Step 2: Convert to fraction form
    15,676.87/21,634.50 = 8,870.35/x
  3. Step 3: Cross multiply
    15,676.87x = 21,634.50 × 8,870.35
  4. Step 4: Simplify right side
    15,676.87x = 191,905,587.08
  5. Step 5: Solve for x
    x = 191,905,587.08/15,676.87
  6. Step 6: Final answer
    x = 12,241.32

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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.