Home / 21,789,420.40-30,069,036.79-12,000,775.41

Finding the Fourth Proportional to 21,789,420.40, 30,069,036.79 and 12,000,775.41

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Solution

The fourth proportional to 21,789,420.40, 30,069,036.79 and 12,000,775.41 is: 16,560,869.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789,420.40 : 30,069,036.79 = 12,000,775.41 : x
  2. Step 2: Convert to fraction form
    21,789,420.40/30,069,036.79 = 12,000,775.41/x
  3. Step 3: Cross multiply
    21,789,420.40x = 30,069,036.79 × 12,000,775.41
  4. Step 4: Simplify right side
    21,789,420.40x = 360,851,757,311,817.31
  5. Step 5: Solve for x
    x = 360,851,757,311,817.31/21,789,420.40
  6. Step 6: Final answer
    x = 16,560,869.94

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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.