Home / 13,809.24-20,666.40-8,542.20

Finding the Fourth Proportional to 13,809.24, 20,666.40 and 8,542.20

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Solution

The fourth proportional to 13,809.24, 20,666.40 and 8,542.20 is: 12,783.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.24 : 20,666.40 = 8,542.20 : x
  2. Step 2: Convert to fraction form
    13,809.24/20,666.40 = 8,542.20/x
  3. Step 3: Cross multiply
    13,809.24x = 20,666.40 × 8,542.20
  4. Step 4: Simplify right side
    13,809.24x = 176,536,522.08
  5. Step 5: Solve for x
    x = 176,536,522.08/13,809.24
  6. Step 6: Final answer
    x = 12,783.94

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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.