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Finding the Fourth Proportional to 12,645.99, 17,452.53 and 7,340.46

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Solution

The fourth proportional to 12,645.99, 17,452.53 and 7,340.46 is: 10,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.99 : 17,452.53 = 7,340.46 : x
  2. Step 2: Convert to fraction form
    12,645.99/17,452.53 = 7,340.46/x
  3. Step 3: Cross multiply
    12,645.99x = 17,452.53 × 7,340.46
  4. Step 4: Simplify right side
    12,645.99x = 128,109,598.36
  5. Step 5: Solve for x
    x = 128,109,598.36/12,645.99
  6. Step 6: Final answer
    x = 10,130.45

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Similar ratio
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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.