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Finding the Fourth Proportional to 12,701.74, 17,530.40 and 7,666.68

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Solution

The fourth proportional to 12,701.74, 17,530.40 and 7,666.68 is: 10,581.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,701.74 : 17,530.40 = 7,666.68 : x
  2. Step 2: Convert to fraction form
    12,701.74/17,530.40 = 7,666.68/x
  3. Step 3: Cross multiply
    12,701.74x = 17,530.40 × 7,666.68
  4. Step 4: Simplify right side
    12,701.74x = 134,399,967.07
  5. Step 5: Solve for x
    x = 134,399,967.07/12,701.74
  6. Step 6: Final answer
    x = 10,581.22

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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.