Home / 20,134.40-30,205.65-16,870.10

Finding the Fourth Proportional to 20,134.40, 30,205.65 and 16,870.10

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Solution

The fourth proportional to 20,134.40, 30,205.65 and 16,870.10 is: 25,308.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.40 : 30,205.65 = 16,870.10 : x
  2. Step 2: Convert to fraction form
    20,134.40/30,205.65 = 16,870.10/x
  3. Step 3: Cross multiply
    20,134.40x = 30,205.65 × 16,870.10
  4. Step 4: Simplify right side
    20,134.40x = 509,572,336.07
  5. Step 5: Solve for x
    x = 509,572,336.07/20,134.40
  6. Step 6: Final answer
    x = 25,308.54

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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.