Home / 20,309.60-30,438.42-17,666.07

Finding the Fourth Proportional to 20,309.60, 30,438.42 and 17,666.07

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Solution

The fourth proportional to 20,309.60, 30,438.42 and 17,666.07 is: 26,476.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.60 : 30,438.42 = 17,666.07 : x
  2. Step 2: Convert to fraction form
    20,309.60/30,438.42 = 17,666.07/x
  3. Step 3: Cross multiply
    20,309.60x = 30,438.42 × 17,666.07
  4. Step 4: Simplify right side
    20,309.60x = 537,727,258.41
  5. Step 5: Solve for x
    x = 537,727,258.41/20,309.60
  6. Step 6: Final answer
    x = 26,476.51

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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.