Home / 13,387.10-20,080.65-7,166.30

Finding the Fourth Proportional to 13,387.10, 20,080.65 and 7,166.30

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Solution

The fourth proportional to 13,387.10, 20,080.65 and 7,166.30 is: 10,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.10 : 20,080.65 = 7,166.30 : x
  2. Step 2: Convert to fraction form
    13,387.10/20,080.65 = 7,166.30/x
  3. Step 3: Cross multiply
    13,387.10x = 20,080.65 × 7,166.30
  4. Step 4: Simplify right side
    13,387.10x = 143,903,962.10
  5. Step 5: Solve for x
    x = 143,903,962.10/13,387.10
  6. Step 6: Final answer
    x = 10,749.45

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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.