Home / 13,636.70-18,818.51-7,668.40

Finding the Fourth Proportional to 13,636.70, 18,818.51 and 7,668.40

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Solution

The fourth proportional to 13,636.70, 18,818.51 and 7,668.40 is: 10,582.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.70 : 18,818.51 = 7,668.40 : x
  2. Step 2: Convert to fraction form
    13,636.70/18,818.51 = 7,668.40/x
  3. Step 3: Cross multiply
    13,636.70x = 18,818.51 × 7,668.40
  4. Step 4: Simplify right side
    13,636.70x = 144,307,834.21
  5. Step 5: Solve for x
    x = 144,307,834.21/13,636.70
  6. Step 6: Final answer
    x = 10,582.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.