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Finding the Fourth Proportional to 12,606.28, 18,886.86 and 7,053.16

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Solution

The fourth proportional to 12,606.28, 18,886.86 and 7,053.16 is: 10,567.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.28 : 18,886.86 = 7,053.16 : x
  2. Step 2: Convert to fraction form
    12,606.28/18,886.86 = 7,053.16/x
  3. Step 3: Cross multiply
    12,606.28x = 18,886.86 × 7,053.16
  4. Step 4: Simplify right side
    12,606.28x = 133,212,045.48
  5. Step 5: Solve for x
    x = 133,212,045.48/12,606.28
  6. Step 6: Final answer
    x = 10,567.12

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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.