Home / 13,913.60-20,875.74-8,370.87

Finding the Fourth Proportional to 13,913.60, 20,875.74 and 8,370.87

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Solution

The fourth proportional to 13,913.60, 20,875.74 and 8,370.87 is: 12,559.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.60 : 20,875.74 = 8,370.87 : x
  2. Step 2: Convert to fraction form
    13,913.60/20,875.74 = 8,370.87/x
  3. Step 3: Cross multiply
    13,913.60x = 20,875.74 × 8,370.87
  4. Step 4: Simplify right side
    13,913.60x = 174,748,105.69
  5. Step 5: Solve for x
    x = 174,748,105.69/13,913.60
  6. Step 6: Final answer
    x = 12,559.52

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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.