Home / 21,061,554.40-31,592,331.60-18,670,069.90

Finding the Fourth Proportional to 21,061,554.40, 31,592,331.60 and 18,670,069.90

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Solution

The fourth proportional to 21,061,554.40, 31,592,331.60 and 18,670,069.90 is: 28,005,104.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061,554.40 : 31,592,331.60 = 18,670,069.90 : x
  2. Step 2: Convert to fraction form
    21,061,554.40/31,592,331.60 = 18,670,069.90/x
  3. Step 3: Cross multiply
    21,061,554.40x = 31,592,331.60 × 18,670,069.90
  4. Step 4: Simplify right side
    21,061,554.40x = 589,831,039,275,978.88
  5. Step 5: Solve for x
    x = 589,831,039,275,978.88/21,061,554.40
  6. Step 6: Final answer
    x = 28,005,104.85

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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.