Home / 31,303.18-43,211.91-18,725.50

Finding the Fourth Proportional to 31,303.18, 43,211.91 and 18,725.50

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Solution

The fourth proportional to 31,303.18, 43,211.91 and 18,725.50 is: 25,849.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,303.18 : 43,211.91 = 18,725.50 : x
  2. Step 2: Convert to fraction form
    31,303.18/43,211.91 = 18,725.50/x
  3. Step 3: Cross multiply
    31,303.18x = 43,211.91 × 18,725.50
  4. Step 4: Simplify right side
    31,303.18x = 809,164,620.71
  5. Step 5: Solve for x
    x = 809,164,620.71/31,303.18
  6. Step 6: Final answer
    x = 25,849.28

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1.5x scale

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.