Home / 31,640.34-47,460.62-11,913.60

Finding the Fourth Proportional to 31,640.34, 47,460.62 and 11,913.60

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Solution

The fourth proportional to 31,640.34, 47,460.62 and 11,913.60 is: 17,870.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,640.34 : 47,460.62 = 11,913.60 : x
  2. Step 2: Convert to fraction form
    31,640.34/47,460.62 = 11,913.60/x
  3. Step 3: Cross multiply
    31,640.34x = 47,460.62 × 11,913.60
  4. Step 4: Simplify right side
    31,640.34x = 565,426,782.86
  5. Step 5: Solve for x
    x = 565,426,782.86/31,640.34
  6. Step 6: Final answer
    x = 17,870.44

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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.