Home / 18,928,750.40-28,393,125.60-13,553,979.20

Finding the Fourth Proportional to 18,928,750.40, 28,393,125.60 and 13,553,979.20

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Solution

The fourth proportional to 18,928,750.40, 28,393,125.60 and 13,553,979.20 is: 20,330,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928,750.40 : 28,393,125.60 = 13,553,979.20 : x
  2. Step 2: Convert to fraction form
    18,928,750.40/28,393,125.60 = 13,553,979.20/x
  3. Step 3: Cross multiply
    18,928,750.40x = 28,393,125.60 × 13,553,979.20
  4. Step 4: Simplify right side
    18,928,750.40x = 384,839,833,805,387.50
  5. Step 5: Solve for x
    x = 384,839,833,805,387.50/18,928,750.40
  6. Step 6: Final answer
    x = 20,330,968.80

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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.