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Finding the Fourth Proportional to 17,420.31, 26,130.47 and 7,029.63

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Solution

The fourth proportional to 17,420.31, 26,130.47 and 7,029.63 is: 10,544.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,420.31 : 26,130.47 = 7,029.63 : x
  2. Step 2: Convert to fraction form
    17,420.31/26,130.47 = 7,029.63/x
  3. Step 3: Cross multiply
    17,420.31x = 26,130.47 × 7,029.63
  4. Step 4: Simplify right side
    17,420.31x = 183,687,500.68
  5. Step 5: Solve for x
    x = 183,687,500.68/17,420.31
  6. Step 6: Final answer
    x = 10,544.45

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Double scale
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Similar ratio
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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.