Home / 21,482,666.40-32,223,999.60-12,989,200.80

Finding the Fourth Proportional to 21,482,666.40, 32,223,999.60 and 12,989,200.80

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Solution

The fourth proportional to 21,482,666.40, 32,223,999.60 and 12,989,200.80 is: 19,483,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,482,666.40 : 32,223,999.60 = 12,989,200.80 : x
  2. Step 2: Convert to fraction form
    21,482,666.40/32,223,999.60 = 12,989,200.80/x
  3. Step 3: Cross multiply
    21,482,666.40x = 32,223,999.60 × 12,989,200.80
  4. Step 4: Simplify right side
    21,482,666.40x = 418,564,001,383,519.75
  5. Step 5: Solve for x
    x = 418,564,001,383,519.75/21,482,666.40
  6. Step 6: Final answer
    x = 19,483,801.20

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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.