Home / 18,338,878.42-25,308,221.46-10,078,790.40

Finding the Fourth Proportional to 18,338,878.42, 25,308,221.46 and 10,078,790.40

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Solution

The fourth proportional to 18,338,878.42, 25,308,221.46 and 10,078,790.40 is: 13,909,043.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338,878.42 : 25,308,221.46 = 10,078,790.40 : x
  2. Step 2: Convert to fraction form
    18,338,878.42/25,308,221.46 = 10,078,790.40/x
  3. Step 3: Cross multiply
    18,338,878.42x = 25,308,221.46 × 10,078,790.40
  4. Step 4: Simplify right side
    18,338,878.42x = 255,076,259,492,122
  5. Step 5: Solve for x
    x = 255,076,259,492,122/18,338,878.42
  6. Step 6: Final answer
    x = 13,909,043.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.