Home / 20,378.63-30,567.99-5,587.76

Finding the Fourth Proportional to 20,378.63, 30,567.99 and 5,587.76

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Solution

The fourth proportional to 20,378.63, 30,567.99 and 5,587.76 is: 8,381.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.63 : 30,567.99 = 5,587.76 : x
  2. Step 2: Convert to fraction form
    20,378.63/30,567.99 = 5,587.76/x
  3. Step 3: Cross multiply
    20,378.63x = 30,567.99 × 5,587.76
  4. Step 4: Simplify right side
    20,378.63x = 170,806,591.80
  5. Step 5: Solve for x
    x = 170,806,591.80/20,378.63
  6. Step 6: Final answer
    x = 8,381.65

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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.