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Finding the Fourth Proportional to 12,598,962.40, 18,877,448.40 and 11,843,135.20

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Solution

The fourth proportional to 12,598,962.40, 18,877,448.40 and 11,843,135.20 is: 17,744,967.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,598,962.40 : 18,877,448.40 = 11,843,135.20 : x
  2. Step 2: Convert to fraction form
    12,598,962.40/18,877,448.40 = 11,843,135.20/x
  3. Step 3: Cross multiply
    12,598,962.40x = 18,877,448.40 × 11,843,135.20
  4. Step 4: Simplify right side
    12,598,962.40x = 223,568,173,632,223.66
  5. Step 5: Solve for x
    x = 223,568,173,632,223.66/12,598,962.40
  6. Step 6: Final answer
    x = 17,744,967.13

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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.