Home / 13,860,220.84-19,124,979.86-7,978,718.13

Finding the Fourth Proportional to 13,860,220.84, 19,124,979.86 and 7,978,718.13

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Solution

The fourth proportional to 13,860,220.84, 19,124,979.86 and 7,978,718.13 is: 11,009,407.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860,220.84 : 19,124,979.86 = 7,978,718.13 : x
  2. Step 2: Convert to fraction form
    13,860,220.84/19,124,979.86 = 7,978,718.13/x
  3. Step 3: Cross multiply
    13,860,220.84x = 19,124,979.86 × 7,978,718.13
  4. Step 4: Simplify right side
    13,860,220.84x = 152,592,823,600,673
  5. Step 5: Solve for x
    x = 152,592,823,600,673/13,860,220.84
  6. Step 6: Final answer
    x = 11,009,407.81

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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.