Home / 31,740.38-47,617.24-12,018.50

Finding the Fourth Proportional to 31,740.38, 47,617.24 and 12,018.50

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Solution

The fourth proportional to 31,740.38, 47,617.24 and 12,018.50 is: 18,030.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,740.38 : 47,617.24 = 12,018.50 : x
  2. Step 2: Convert to fraction form
    31,740.38/47,617.24 = 12,018.50/x
  3. Step 3: Cross multiply
    31,740.38x = 47,617.24 × 12,018.50
  4. Step 4: Simplify right side
    31,740.38x = 572,287,798.94
  5. Step 5: Solve for x
    x = 572,287,798.94/31,740.38
  6. Step 6: Final answer
    x = 18,030.28

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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.