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Finding the Fourth Proportional to 18,684,673.10, 28,027,009.65 and 15,661,364.30

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Solution

The fourth proportional to 18,684,673.10, 28,027,009.65 and 15,661,364.30 is: 23,492,046.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,673.10 : 28,027,009.65 = 15,661,364.30 : x
  2. Step 2: Convert to fraction form
    18,684,673.10/28,027,009.65 = 15,661,364.30/x
  3. Step 3: Cross multiply
    18,684,673.10x = 28,027,009.65 × 15,661,364.30
  4. Step 4: Simplify right side
    18,684,673.10x = 438,941,208,368,265.50
  5. Step 5: Solve for x
    x = 438,941,208,368,265.50/18,684,673.10
  6. Step 6: Final answer
    x = 23,492,046.45

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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.