Home / 12,459,918.40-18,660,386.40-8,449,115.20

Finding the Fourth Proportional to 12,459,918.40, 18,660,386.40 and 8,449,115.20

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Solution

The fourth proportional to 12,459,918.40, 18,660,386.40 and 8,449,115.20 is: 12,653,674.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459,918.40 : 18,660,386.40 = 8,449,115.20 : x
  2. Step 2: Convert to fraction form
    12,459,918.40/18,660,386.40 = 8,449,115.20/x
  3. Step 3: Cross multiply
    12,459,918.40x = 18,660,386.40 × 8,449,115.20
  4. Step 4: Simplify right side
    12,459,918.40x = 157,663,754,370,113.25
  5. Step 5: Solve for x
    x = 157,663,754,370,113.25/12,459,918.40
  6. Step 6: Final answer
    x = 12,653,674.71

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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.