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Finding the Fourth Proportional to 21,739.64, 32,617.67 and 7,699.10

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Solution

The fourth proportional to 21,739.64, 32,617.67 and 7,699.10 is: 11,551.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,739.64 : 32,617.67 = 7,699.10 : x
  2. Step 2: Convert to fraction form
    21,739.64/32,617.67 = 7,699.10/x
  3. Step 3: Cross multiply
    21,739.64x = 32,617.67 × 7,699.10
  4. Step 4: Simplify right side
    21,739.64x = 251,126,501.51
  5. Step 5: Solve for x
    x = 251,126,501.51/21,739.64
  6. Step 6: Final answer
    x = 11,551.55

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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.