Home / 30,905.31-46,326.70-12,178.06

Finding the Fourth Proportional to 30,905.31, 46,326.70 and 12,178.06

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Solution

The fourth proportional to 30,905.31, 46,326.70 and 12,178.06 is: 18,254.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,905.31 : 46,326.70 = 12,178.06 : x
  2. Step 2: Convert to fraction form
    30,905.31/46,326.70 = 12,178.06/x
  3. Step 3: Cross multiply
    30,905.31x = 46,326.70 × 12,178.06
  4. Step 4: Simplify right side
    30,905.31x = 564,169,271.31
  5. Step 5: Solve for x
    x = 564,169,271.31/30,905.31
  6. Step 6: Final answer
    x = 18,254.77

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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.