Home / 31,819.32-47,689.80-13,087.68

Finding the Fourth Proportional to 31,819.32, 47,689.80 and 13,087.68

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Solution

The fourth proportional to 31,819.32, 47,689.80 and 13,087.68 is: 19,615.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,819.32 : 47,689.80 = 13,087.68 : x
  2. Step 2: Convert to fraction form
    31,819.32/47,689.80 = 13,087.68/x
  3. Step 3: Cross multiply
    31,819.32x = 47,689.80 × 13,087.68
  4. Step 4: Simplify right side
    31,819.32x = 624,148,841.66
  5. Step 5: Solve for x
    x = 624,148,841.66/31,819.32
  6. Step 6: Final answer
    x = 19,615.40

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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.