Home / 31,406.18-47,109.54-9,219.92

Finding the Fourth Proportional to 31,406.18, 47,109.54 and 9,219.92

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Solution

The fourth proportional to 31,406.18, 47,109.54 and 9,219.92 is: 13,829.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,406.18 : 47,109.54 = 9,219.92 : x
  2. Step 2: Convert to fraction form
    31,406.18/47,109.54 = 9,219.92/x
  3. Step 3: Cross multiply
    31,406.18x = 47,109.54 × 9,219.92
  4. Step 4: Simplify right side
    31,406.18x = 434,346,190.04
  5. Step 5: Solve for x
    x = 434,346,190.04/31,406.18
  6. Step 6: Final answer
    x = 13,829.96

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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.