Home / 12,918,318.40-17,828,084.64-7,117,098.94

Finding the Fourth Proportional to 12,918,318.40, 17,828,084.64 and 7,117,098.94

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Solution

The fourth proportional to 12,918,318.40, 17,828,084.64 and 7,117,098.94 is: 9,822,040.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918,318.40 : 17,828,084.64 = 7,117,098.94 : x
  2. Step 2: Convert to fraction form
    12,918,318.40/17,828,084.64 = 7,117,098.94/x
  3. Step 3: Cross multiply
    12,918,318.40x = 17,828,084.64 × 7,117,098.94
  4. Step 4: Simplify right side
    12,918,318.40x = 126,884,242,293,574.30
  5. Step 5: Solve for x
    x = 126,884,242,293,574.30/12,918,318.40
  6. Step 6: Final answer
    x = 9,822,040.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.