Home / 20,118,128.40-30,177,291.02-7,338,612.60

Finding the Fourth Proportional to 20,118,128.40, 30,177,291.02 and 7,338,612.60

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Solution

The fourth proportional to 20,118,128.40, 30,177,291.02 and 7,338,612.60 is: 11,007,954.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118,128.40 : 30,177,291.02 = 7,338,612.60 : x
  2. Step 2: Convert to fraction form
    20,118,128.40/30,177,291.02 = 7,338,612.60/x
  3. Step 3: Cross multiply
    20,118,128.40x = 30,177,291.02 × 7,338,612.60
  4. Step 4: Simplify right side
    20,118,128.40x = 221,459,448,076,545.78
  5. Step 5: Solve for x
    x = 221,459,448,076,545.78/20,118,128.40
  6. Step 6: Final answer
    x = 11,007,954.80

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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.