Home / 14,688.72-20,270.77-8,720.41

Finding the Fourth Proportional to 14,688.72, 20,270.77 and 8,720.41

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Solution

The fourth proportional to 14,688.72, 20,270.77 and 8,720.41 is: 12,034.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.72 : 20,270.77 = 8,720.41 : x
  2. Step 2: Convert to fraction form
    14,688.72/20,270.77 = 8,720.41/x
  3. Step 3: Cross multiply
    14,688.72x = 20,270.77 × 8,720.41
  4. Step 4: Simplify right side
    14,688.72x = 176,769,425.42
  5. Step 5: Solve for x
    x = 176,769,425.42/14,688.72
  6. Step 6: Final answer
    x = 12,034.37

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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.