Home / 31,394.64-47,079.78-11,668.74

Finding the Fourth Proportional to 31,394.64, 47,079.78 and 11,668.74

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Solution

The fourth proportional to 31,394.64, 47,079.78 and 11,668.74 is: 17,498.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,394.64 : 47,079.78 = 11,668.74 : x
  2. Step 2: Convert to fraction form
    31,394.64/47,079.78 = 11,668.74/x
  3. Step 3: Cross multiply
    31,394.64x = 47,079.78 × 11,668.74
  4. Step 4: Simplify right side
    31,394.64x = 549,361,712.08
  5. Step 5: Solve for x
    x = 549,361,712.08/31,394.64
  6. Step 6: Final answer
    x = 17,498.58

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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.