Home / 10,875.25-16,312.88-4,719.25

Finding the Fourth Proportional to 10,875.25, 16,312.88 and 4,719.25

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Solution

The fourth proportional to 10,875.25, 16,312.88 and 4,719.25 is: 7,078.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,875.25 : 16,312.88 = 4,719.25 : x
  2. Step 2: Convert to fraction form
    10,875.25/16,312.88 = 4,719.25/x
  3. Step 3: Cross multiply
    10,875.25x = 16,312.88 × 4,719.25
  4. Step 4: Simplify right side
    10,875.25x = 76,984,558.94
  5. Step 5: Solve for x
    x = 76,984,558.94/10,875.25
  6. Step 6: Final answer
    x = 7,078.88

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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.