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Finding the Fourth Proportional to 14,652,275.20, 21,978,412.80 and 7,485,913.60

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Solution

The fourth proportional to 14,652,275.20, 21,978,412.80 and 7,485,913.60 is: 11,228,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,652,275.20 : 21,978,412.80 = 7,485,913.60 : x
  2. Step 2: Convert to fraction form
    14,652,275.20/21,978,412.80 = 7,485,913.60/x
  3. Step 3: Cross multiply
    14,652,275.20x = 21,978,412.80 × 7,485,913.60
  4. Step 4: Simplify right side
    14,652,275.20x = 164,528,499,285,934.06
  5. Step 5: Solve for x
    x = 164,528,499,285,934.06/14,652,275.20
  6. Step 6: Final answer
    x = 11,228,870.40

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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.