Home / 10,921.32-16,374.96-4,685.40

Finding the Fourth Proportional to 10,921.32, 16,374.96 and 4,685.40

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Solution

The fourth proportional to 10,921.32, 16,374.96 and 4,685.40 is: 7,025.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.32 : 16,374.96 = 4,685.40 : x
  2. Step 2: Convert to fraction form
    10,921.32/16,374.96 = 4,685.40/x
  3. Step 3: Cross multiply
    10,921.32x = 16,374.96 × 4,685.40
  4. Step 4: Simplify right side
    10,921.32x = 76,723,237.58
  5. Step 5: Solve for x
    x = 76,723,237.58/10,921.32
  6. Step 6: Final answer
    x = 7,025.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.