Home / 31,430.50-47,135.70-10,366.60

Finding the Fourth Proportional to 31,430.50, 47,135.70 and 10,366.60

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Solution

The fourth proportional to 31,430.50, 47,135.70 and 10,366.60 is: 15,546.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.50 : 47,135.70 = 10,366.60 : x
  2. Step 2: Convert to fraction form
    31,430.50/47,135.70 = 10,366.60/x
  3. Step 3: Cross multiply
    31,430.50x = 47,135.70 × 10,366.60
  4. Step 4: Simplify right side
    31,430.50x = 488,636,947.62
  5. Step 5: Solve for x
    x = 488,636,947.62/31,430.50
  6. Step 6: Final answer
    x = 15,546.59

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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.