Home / 31,980.08-47,970.21-11,198.72

Finding the Fourth Proportional to 31,980.08, 47,970.21 and 11,198.72

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Solution

The fourth proportional to 31,980.08, 47,970.21 and 11,198.72 is: 16,798.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,980.08 : 47,970.21 = 11,198.72 : x
  2. Step 2: Convert to fraction form
    31,980.08/47,970.21 = 11,198.72/x
  3. Step 3: Cross multiply
    31,980.08x = 47,970.21 × 11,198.72
  4. Step 4: Simplify right side
    31,980.08x = 537,204,950.13
  5. Step 5: Solve for x
    x = 537,204,950.13/31,980.08
  6. Step 6: Final answer
    x = 16,798.11

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1.5x scale

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.