Home / 12,927,431.81-17,839,980.11-7,126,421.15

Finding the Fourth Proportional to 12,927,431.81, 17,839,980.11 and 7,126,421.15

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Solution

The fourth proportional to 12,927,431.81, 17,839,980.11 and 7,126,421.15 is: 9,834,529.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927,431.81 : 17,839,980.11 = 7,126,421.15 : x
  2. Step 2: Convert to fraction form
    12,927,431.81/17,839,980.11 = 7,126,421.15/x
  3. Step 3: Cross multiply
    12,927,431.81x = 17,839,980.11 × 7,126,421.15
  4. Step 4: Simplify right side
    12,927,431.81x = 127,135,211,633,899.33
  5. Step 5: Solve for x
    x = 127,135,211,633,899.33/12,927,431.81
  6. Step 6: Final answer
    x = 9,834,529.66

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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.