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Finding the Fourth Proportional to 21,405.93, 32,111.93 and 6,616.14

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Solution

The fourth proportional to 21,405.93, 32,111.93 and 6,616.14 is: 9,925.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.93 : 32,111.93 = 6,616.14 : x
  2. Step 2: Convert to fraction form
    21,405.93/32,111.93 = 6,616.14/x
  3. Step 3: Cross multiply
    21,405.93x = 32,111.93 × 6,616.14
  4. Step 4: Simplify right side
    21,405.93x = 212,457,024.55
  5. Step 5: Solve for x
    x = 212,457,024.55/21,405.93
  6. Step 6: Final answer
    x = 9,925.15

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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.