Home / 12,686.34-19,029.64-5,666.72

Finding the Fourth Proportional to 12,686.34, 19,029.64 and 5,666.72

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Solution

The fourth proportional to 12,686.34, 19,029.64 and 5,666.72 is: 8,500.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.34 : 19,029.64 = 5,666.72 : x
  2. Step 2: Convert to fraction form
    12,686.34/19,029.64 = 5,666.72/x
  3. Step 3: Cross multiply
    12,686.34x = 19,029.64 × 5,666.72
  4. Step 4: Simplify right side
    12,686.34x = 107,835,641.58
  5. Step 5: Solve for x
    x = 107,835,641.58/12,686.34
  6. Step 6: Final answer
    x = 8,500.14

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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.