Home / 12,381,058.13-18,561,819.69-7,822,498.40

Finding the Fourth Proportional to 12,381,058.13, 18,561,819.69 and 7,822,498.40

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Solution

The fourth proportional to 12,381,058.13, 18,561,819.69 and 7,822,498.40 is: 11,727,576.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381,058.13 : 18,561,819.69 = 7,822,498.40 : x
  2. Step 2: Convert to fraction form
    12,381,058.13/18,561,819.69 = 7,822,498.40/x
  3. Step 3: Cross multiply
    12,381,058.13x = 18,561,819.69 × 7,822,498.40
  4. Step 4: Simplify right side
    12,381,058.13x = 145,199,804,872,518.06
  5. Step 5: Solve for x
    x = 145,199,804,872,518.06/12,381,058.13
  6. Step 6: Final answer
    x = 11,727,576.38

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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.