Home / 13,129,411.30-18,117,848.55-7,328,565.52

Finding the Fourth Proportional to 13,129,411.30, 18,117,848.55 and 7,328,565.52

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Solution

The fourth proportional to 13,129,411.30, 18,117,848.55 and 7,328,565.52 is: 10,113,007.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129,411.30 : 18,117,848.55 = 7,328,565.52 : x
  2. Step 2: Convert to fraction form
    13,129,411.30/18,117,848.55 = 7,328,565.52/x
  3. Step 3: Cross multiply
    13,129,411.30x = 18,117,848.55 × 7,328,565.52
  4. Step 4: Simplify right side
    13,129,411.30x = 132,777,840,180,112
  5. Step 5: Solve for x
    x = 132,777,840,180,112/13,129,411.30
  6. Step 6: Final answer
    x = 10,113,007.90

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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.