Home / 18,215,115.76-25,137,381-9,955,638.64

Finding the Fourth Proportional to 18,215,115.76, 25,137,381 and 9,955,638.64

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Solution

The fourth proportional to 18,215,115.76, 25,137,381 and 9,955,638.64 is: 13,739,066.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215,115.76 : 25,137,381 = 9,955,638.64 : x
  2. Step 2: Convert to fraction form
    18,215,115.76/25,137,381 = 9,955,638.64/x
  3. Step 3: Cross multiply
    18,215,115.76x = 25,137,381 × 9,955,638.64
  4. Step 4: Simplify right side
    18,215,115.76x = 250,258,681,592,001.84
  5. Step 5: Solve for x
    x = 250,258,681,592,001.84/18,215,115.76
  6. Step 6: Final answer
    x = 13,739,066.22

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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.