Home / 13,587.46-18,750.60-8,281.96

Finding the Fourth Proportional to 13,587.46, 18,750.60 and 8,281.96

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Solution

The fourth proportional to 13,587.46, 18,750.60 and 8,281.96 is: 11,429.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.46 : 18,750.60 = 8,281.96 : x
  2. Step 2: Convert to fraction form
    13,587.46/18,750.60 = 8,281.96/x
  3. Step 3: Cross multiply
    13,587.46x = 18,750.60 × 8,281.96
  4. Step 4: Simplify right side
    13,587.46x = 155,291,719.18
  5. Step 5: Solve for x
    x = 155,291,719.18/13,587.46
  6. Step 6: Final answer
    x = 11,429.05

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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.