Home / 12,427.73-17,130.58-9,191.89

Finding the Fourth Proportional to 12,427.73, 17,130.58 and 9,191.89

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Solution

The fourth proportional to 12,427.73, 17,130.58 and 9,191.89 is: 12,670.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.73 : 17,130.58 = 9,191.89 : x
  2. Step 2: Convert to fraction form
    12,427.73/17,130.58 = 9,191.89/x
  3. Step 3: Cross multiply
    12,427.73x = 17,130.58 × 9,191.89
  4. Step 4: Simplify right side
    12,427.73x = 157,462,341.19
  5. Step 5: Solve for x
    x = 157,462,341.19/12,427.73
  6. Step 6: Final answer
    x = 12,670.25

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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.