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Finding the Fourth Proportional to 14,649,643.20, 21,974,464.80 and 12,484,804.80

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Solution

The fourth proportional to 14,649,643.20, 21,974,464.80 and 12,484,804.80 is: 18,727,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,649,643.20 : 21,974,464.80 = 12,484,804.80 : x
  2. Step 2: Convert to fraction form
    14,649,643.20/21,974,464.80 = 12,484,804.80/x
  3. Step 3: Cross multiply
    14,649,643.20x = 21,974,464.80 × 12,484,804.80
  4. Step 4: Simplify right side
    14,649,643.20x = 274,346,903,612,471.06
  5. Step 5: Solve for x
    x = 274,346,903,612,471.06/14,649,643.20
  6. Step 6: Final answer
    x = 18,727,207.20

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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.