Home / 31,668.63-47,509.71-11,678.18

Finding the Fourth Proportional to 31,668.63, 47,509.71 and 11,678.18

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Solution

The fourth proportional to 31,668.63, 47,509.71 and 11,678.18 is: 17,519.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,668.63 : 47,509.71 = 11,678.18 : x
  2. Step 2: Convert to fraction form
    31,668.63/47,509.71 = 11,678.18/x
  3. Step 3: Cross multiply
    31,668.63x = 47,509.71 × 11,678.18
  4. Step 4: Simplify right side
    31,668.63x = 554,826,707.58
  5. Step 5: Solve for x
    x = 554,826,707.58/31,668.63
  6. Step 6: Final answer
    x = 17,519.76

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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.