Home / 20,510,000.20-30,765,000.30-5,363,931.70

Finding the Fourth Proportional to 20,510,000.20, 30,765,000.30 and 5,363,931.70

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Solution

The fourth proportional to 20,510,000.20, 30,765,000.30 and 5,363,931.70 is: 8,045,897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510,000.20 : 30,765,000.30 = 5,363,931.70 : x
  2. Step 2: Convert to fraction form
    20,510,000.20/30,765,000.30 = 5,363,931.70/x
  3. Step 3: Cross multiply
    20,510,000.20x = 30,765,000.30 × 5,363,931.70
  4. Step 4: Simplify right side
    20,510,000.20x = 165,021,360,359,679.53
  5. Step 5: Solve for x
    x = 165,021,360,359,679.53/20,510,000.20
  6. Step 6: Final answer
    x = 8,045,897.55

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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.