Home / 18,488,057.40-25,519,931.86-12,705,979.32

Finding the Fourth Proportional to 18,488,057.40, 25,519,931.86 and 12,705,979.32

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Solution

The fourth proportional to 18,488,057.40, 25,519,931.86 and 12,705,979.32 is: 17,538,658.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488,057.40 : 25,519,931.86 = 12,705,979.32 : x
  2. Step 2: Convert to fraction form
    18,488,057.40/25,519,931.86 = 12,705,979.32/x
  3. Step 3: Cross multiply
    18,488,057.40x = 25,519,931.86 × 12,705,979.32
  4. Step 4: Simplify right side
    18,488,057.40x = 324,255,726,460,969.12
  5. Step 5: Solve for x
    x = 324,255,726,460,969.12/18,488,057.40
  6. Step 6: Final answer
    x = 17,538,658.58

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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.