Home / 31,430.66-47,135.98-10,366.78

Finding the Fourth Proportional to 31,430.66, 47,135.98 and 10,366.78

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Solution

The fourth proportional to 31,430.66, 47,135.98 and 10,366.78 is: 15,546.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.66 : 47,135.98 = 10,366.78 : x
  2. Step 2: Convert to fraction form
    31,430.66/47,135.98 = 10,366.78/x
  3. Step 3: Cross multiply
    31,430.66x = 47,135.98 × 10,366.78
  4. Step 4: Simplify right side
    31,430.66x = 488,648,334.74
  5. Step 5: Solve for x
    x = 488,648,334.74/31,430.66
  6. Step 6: Final answer
    x = 15,546.87

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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.