Home / 20,526.21-30,740.45-13,107.69

Finding the Fourth Proportional to 20,526.21, 30,740.45 and 13,107.69

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Solution

The fourth proportional to 20,526.21, 30,740.45 and 13,107.69 is: 19,630.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526.21 : 30,740.45 = 13,107.69 : x
  2. Step 2: Convert to fraction form
    20,526.21/30,740.45 = 13,107.69/x
  3. Step 3: Cross multiply
    20,526.21x = 30,740.45 × 13,107.69
  4. Step 4: Simplify right side
    20,526.21x = 402,936,223.52
  5. Step 5: Solve for x
    x = 402,936,223.52/20,526.21
  6. Step 6: Final answer
    x = 19,630.33

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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.