Home / 20,031.04-30,064.38-10,678.78

Finding the Fourth Proportional to 20,031.04, 30,064.38 and 10,678.78

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Solution

The fourth proportional to 20,031.04, 30,064.38 and 10,678.78 is: 16,027.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.04 : 30,064.38 = 10,678.78 : x
  2. Step 2: Convert to fraction form
    20,031.04/30,064.38 = 10,678.78/x
  3. Step 3: Cross multiply
    20,031.04x = 30,064.38 × 10,678.78
  4. Step 4: Simplify right side
    20,031.04x = 321,050,899.86
  5. Step 5: Solve for x
    x = 321,050,899.86/20,031.04
  6. Step 6: Final answer
    x = 16,027.67

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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.