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Finding the Fourth Proportional to 16,656,005.40, 24,984,008.10 and 12,872,203.80

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Solution

The fourth proportional to 16,656,005.40, 24,984,008.10 and 12,872,203.80 is: 19,308,305.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,656,005.40 : 24,984,008.10 = 12,872,203.80 : x
  2. Step 2: Convert to fraction form
    16,656,005.40/24,984,008.10 = 12,872,203.80/x
  3. Step 3: Cross multiply
    16,656,005.40x = 24,984,008.10 × 12,872,203.80
  4. Step 4: Simplify right side
    16,656,005.40x = 321,599,244,004,050.81
  5. Step 5: Solve for x
    x = 321,599,244,004,050.81/16,656,005.40
  6. Step 6: Final answer
    x = 19,308,305.70

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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.