Home / 20,102.55-30,146.10-9,564.45

Finding the Fourth Proportional to 20,102.55, 30,146.10 and 9,564.45

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Solution

The fourth proportional to 20,102.55, 30,146.10 and 9,564.45 is: 14,343.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.55 : 30,146.10 = 9,564.45 : x
  2. Step 2: Convert to fraction form
    20,102.55/30,146.10 = 9,564.45/x
  3. Step 3: Cross multiply
    20,102.55x = 30,146.10 × 9,564.45
  4. Step 4: Simplify right side
    20,102.55x = 288,330,866.15
  5. Step 5: Solve for x
    x = 288,330,866.15/20,102.55
  6. Step 6: Final answer
    x = 14,343.00

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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.