Home / 12,457,664.70-18,689,121.45-3,938,862.30

Finding the Fourth Proportional to 12,457,664.70, 18,689,121.45 and 3,938,862.30

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Solution

The fourth proportional to 12,457,664.70, 18,689,121.45 and 3,938,862.30 is: 5,909,123.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,664.70 : 18,689,121.45 = 3,938,862.30 : x
  2. Step 2: Convert to fraction form
    12,457,664.70/18,689,121.45 = 3,938,862.30/x
  3. Step 3: Cross multiply
    12,457,664.70x = 18,689,121.45 × 3,938,862.30
  4. Step 4: Simplify right side
    12,457,664.70x = 73,613,875,899,526.33
  5. Step 5: Solve for x
    x = 73,613,875,899,526.33/12,457,664.70
  6. Step 6: Final answer
    x = 5,909,123.23

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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.