Home / 25,218.57-34,769.10-20,664.32

Finding the Fourth Proportional to 25,218.57, 34,769.10 and 20,664.32

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Solution

The fourth proportional to 25,218.57, 34,769.10 and 20,664.32 is: 28,490.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,218.57 : 34,769.10 = 20,664.32 : x
  2. Step 2: Convert to fraction form
    25,218.57/34,769.10 = 20,664.32/x
  3. Step 3: Cross multiply
    25,218.57x = 34,769.10 × 20,664.32
  4. Step 4: Simplify right side
    25,218.57x = 718,479,808.51
  5. Step 5: Solve for x
    x = 718,479,808.51/25,218.57
  6. Step 6: Final answer
    x = 28,490.11

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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.