Home / 19,690.58-27,157.65-12,617.66

Finding the Fourth Proportional to 19,690.58, 27,157.65 and 12,617.66

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Solution

The fourth proportional to 19,690.58, 27,157.65 and 12,617.66 is: 17,402.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.58 : 27,157.65 = 12,617.66 : x
  2. Step 2: Convert to fraction form
    19,690.58/27,157.65 = 12,617.66/x
  3. Step 3: Cross multiply
    19,690.58x = 27,157.65 × 12,617.66
  4. Step 4: Simplify right side
    19,690.58x = 342,666,014.68
  5. Step 5: Solve for x
    x = 342,666,014.68/19,690.58
  6. Step 6: Final answer
    x = 17,402.53

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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.