Home / 21,789,420.90-30,069,037.49-12,000,775.91

Finding the Fourth Proportional to 21,789,420.90, 30,069,037.49 and 12,000,775.91

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Solution

The fourth proportional to 21,789,420.90, 30,069,037.49 and 12,000,775.91 is: 16,560,870.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789,420.90 : 30,069,037.49 = 12,000,775.91 : x
  2. Step 2: Convert to fraction form
    21,789,420.90/30,069,037.49 = 12,000,775.91/x
  3. Step 3: Cross multiply
    21,789,420.90x = 30,069,037.49 × 12,000,775.91
  4. Step 4: Simplify right side
    21,789,420.90x = 360,851,780,536,529.75
  5. Step 5: Solve for x
    x = 360,851,780,536,529.75/21,789,420.90
  6. Step 6: Final answer
    x = 16,560,870.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.