Home / 21,088.23-29,042.52-20,628.96

Finding the Fourth Proportional to 21,088.23, 29,042.52 and 20,628.96

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Solution

The fourth proportional to 21,088.23, 29,042.52 and 20,628.96 is: 28,410.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.23 : 29,042.52 = 20,628.96 : x
  2. Step 2: Convert to fraction form
    21,088.23/29,042.52 = 20,628.96/x
  3. Step 3: Cross multiply
    21,088.23x = 29,042.52 × 20,628.96
  4. Step 4: Simplify right side
    21,088.23x = 599,116,983.38
  5. Step 5: Solve for x
    x = 599,116,983.38/21,088.23
  6. Step 6: Final answer
    x = 28,410.02

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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.