Home / 21,457,047.20-32,143,580.40-12,912,000.80

Finding the Fourth Proportional to 21,457,047.20, 32,143,580.40 and 12,912,000.80

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Solution

The fourth proportional to 21,457,047.20, 32,143,580.40 and 12,912,000.80 is: 19,342,733.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457,047.20 : 32,143,580.40 = 12,912,000.80 : x
  2. Step 2: Convert to fraction form
    21,457,047.20/32,143,580.40 = 12,912,000.80/x
  3. Step 3: Cross multiply
    21,457,047.20x = 32,143,580.40 × 12,912,000.80
  4. Step 4: Simplify right side
    21,457,047.20x = 415,037,935,839,664.31
  5. Step 5: Solve for x
    x = 415,037,935,839,664.31/21,457,047.20
  6. Step 6: Final answer
    x = 19,342,733.04

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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.