Home / 13,008,702.05-17,951,994.78-7,128,479.61

Finding the Fourth Proportional to 13,008,702.05, 17,951,994.78 and 7,128,479.61

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Solution

The fourth proportional to 13,008,702.05, 17,951,994.78 and 7,128,479.61 is: 9,837,294.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008,702.05 : 17,951,994.78 = 7,128,479.61 : x
  2. Step 2: Convert to fraction form
    13,008,702.05/17,951,994.78 = 7,128,479.61/x
  3. Step 3: Cross multiply
    13,008,702.05x = 17,951,994.78 × 7,128,479.61
  4. Step 4: Simplify right side
    13,008,702.05x = 127,970,428,748,056.45
  5. Step 5: Solve for x
    x = 127,970,428,748,056.45/13,008,702.05
  6. Step 6: Final answer
    x = 9,837,294.17

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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.