Home / 20,312.55-30,473.38-7,165.03

Finding the Fourth Proportional to 20,312.55, 30,473.38 and 7,165.03

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Solution

The fourth proportional to 20,312.55, 30,473.38 and 7,165.03 is: 10,749.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.55 : 30,473.38 = 7,165.03 : x
  2. Step 2: Convert to fraction form
    20,312.55/30,473.38 = 7,165.03/x
  3. Step 3: Cross multiply
    20,312.55x = 30,473.38 × 7,165.03
  4. Step 4: Simplify right side
    20,312.55x = 218,342,681.90
  5. Step 5: Solve for x
    x = 218,342,681.90/20,312.55
  6. Step 6: Final answer
    x = 10,749.15

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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.