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Finding the Fourth Proportional to 21,999.48, 32,999.20 and 6,417.10

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Solution

The fourth proportional to 21,999.48, 32,999.20 and 6,417.10 is: 9,625.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.48 : 32,999.20 = 6,417.10 : x
  2. Step 2: Convert to fraction form
    21,999.48/32,999.20 = 6,417.10/x
  3. Step 3: Cross multiply
    21,999.48x = 32,999.20 × 6,417.10
  4. Step 4: Simplify right side
    21,999.48x = 211,759,166.32
  5. Step 5: Solve for x
    x = 211,759,166.32/21,999.48
  6. Step 6: Final answer
    x = 9,625.64

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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.