Home / 20,219,818.70-30,329,728.05-12,567,068.30

Finding the Fourth Proportional to 20,219,818.70, 30,329,728.05 and 12,567,068.30

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Solution

The fourth proportional to 20,219,818.70, 30,329,728.05 and 12,567,068.30 is: 18,850,602.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,818.70 : 30,329,728.05 = 12,567,068.30 : x
  2. Step 2: Convert to fraction form
    20,219,818.70/30,329,728.05 = 12,567,068.30/x
  3. Step 3: Cross multiply
    20,219,818.70x = 30,329,728.05 × 12,567,068.30
  4. Step 4: Simplify right side
    20,219,818.70x = 381,155,763,924,775.88
  5. Step 5: Solve for x
    x = 381,155,763,924,775.88/20,219,818.70
  6. Step 6: Final answer
    x = 18,850,602.45

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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.