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Finding the Fourth Proportional to 13,360.80, 20,041.02 and 5,461.68

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Solution

The fourth proportional to 13,360.80, 20,041.02 and 5,461.68 is: 8,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.80 : 20,041.02 = 5,461.68 : x
  2. Step 2: Convert to fraction form
    13,360.80/20,041.02 = 5,461.68/x
  3. Step 3: Cross multiply
    13,360.80x = 20,041.02 × 5,461.68
  4. Step 4: Simplify right side
    13,360.80x = 109,457,638.11
  5. Step 5: Solve for x
    x = 109,457,638.11/13,360.80
  6. Step 6: Final answer
    x = 8,192.45

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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.