Home / 31,830.12-47,728.38-10,762.92

Finding the Fourth Proportional to 31,830.12, 47,728.38 and 10,762.92

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Solution

The fourth proportional to 31,830.12, 47,728.38 and 10,762.92 is: 16,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,830.12 : 47,728.38 = 10,762.92 : x
  2. Step 2: Convert to fraction form
    31,830.12/47,728.38 = 10,762.92/x
  3. Step 3: Cross multiply
    31,830.12x = 47,728.38 × 10,762.92
  4. Step 4: Simplify right side
    31,830.12x = 513,696,735.67
  5. Step 5: Solve for x
    x = 513,696,735.67/31,830.12
  6. Step 6: Final answer
    x = 16,138.70

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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.