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Finding the Fourth Proportional to 12,602,509.60, 18,889,767.60 and 6,926,807.20

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Solution

The fourth proportional to 12,602,509.60, 18,889,767.60 and 6,926,807.20 is: 10,382,517.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602,509.60 : 18,889,767.60 = 6,926,807.20 : x
  2. Step 2: Convert to fraction form
    12,602,509.60/18,889,767.60 = 6,926,807.20/x
  3. Step 3: Cross multiply
    12,602,509.60x = 18,889,767.60 × 6,926,807.20
  4. Step 4: Simplify right side
    12,602,509.60x = 130,845,778,218,006.73
  5. Step 5: Solve for x
    x = 130,845,778,218,006.73/12,602,509.60
  6. Step 6: Final answer
    x = 10,382,517.64

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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.