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Finding the Fourth Proportional to 18,889,484.40, 28,286,987.40 and 15,110,348.40

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Solution

The fourth proportional to 18,889,484.40, 28,286,987.40 and 15,110,348.40 is: 22,627,734.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889,484.40 : 28,286,987.40 = 15,110,348.40 : x
  2. Step 2: Convert to fraction form
    18,889,484.40/28,286,987.40 = 15,110,348.40/x
  3. Step 3: Cross multiply
    18,889,484.40x = 28,286,987.40 × 15,110,348.40
  4. Step 4: Simplify right side
    18,889,484.40x = 427,426,234,800,410.12
  5. Step 5: Solve for x
    x = 427,426,234,800,410.12/18,889,484.40
  6. Step 6: Final answer
    x = 22,627,734.34

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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.