Home / 21,025.68-29,009.64-12,072.72

Finding the Fourth Proportional to 21,025.68, 29,009.64 and 12,072.72

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Solution

The fourth proportional to 21,025.68, 29,009.64 and 12,072.72 is: 16,657.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.68 : 29,009.64 = 12,072.72 : x
  2. Step 2: Convert to fraction form
    21,025.68/29,009.64 = 12,072.72/x
  3. Step 3: Cross multiply
    21,025.68x = 29,009.64 × 12,072.72
  4. Step 4: Simplify right side
    21,025.68x = 350,225,261.02
  5. Step 5: Solve for x
    x = 350,225,261.02/21,025.68
  6. Step 6: Final answer
    x = 16,657.02

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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.