Home / 12,688.34-19,032.64-5,668.72

Finding the Fourth Proportional to 12,688.34, 19,032.64 and 5,668.72

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Solution

The fourth proportional to 12,688.34, 19,032.64 and 5,668.72 is: 8,503.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.34 : 19,032.64 = 5,668.72 : x
  2. Step 2: Convert to fraction form
    12,688.34/19,032.64 = 5,668.72/x
  3. Step 3: Cross multiply
    12,688.34x = 19,032.64 × 5,668.72
  4. Step 4: Simplify right side
    12,688.34x = 107,890,707.02
  5. Step 5: Solve for x
    x = 107,890,707.02/12,688.34
  6. Step 6: Final answer
    x = 8,503.14

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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.