Home / 20,207.40-30,300.30-8,507.40

Finding the Fourth Proportional to 20,207.40, 30,300.30 and 8,507.40

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Solution

The fourth proportional to 20,207.40, 30,300.30 and 8,507.40 is: 12,756.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.40 : 30,300.30 = 8,507.40 : x
  2. Step 2: Convert to fraction form
    20,207.40/30,300.30 = 8,507.40/x
  3. Step 3: Cross multiply
    20,207.40x = 30,300.30 × 8,507.40
  4. Step 4: Simplify right side
    20,207.40x = 257,776,772.22
  5. Step 5: Solve for x
    x = 257,776,772.22/20,207.40
  6. Step 6: Final answer
    x = 12,756.55

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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.