Home / 20,410.65-28,168.29-11,460.15

Finding the Fourth Proportional to 20,410.65, 28,168.29 and 11,460.15

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Solution

The fourth proportional to 20,410.65, 28,168.29 and 11,460.15 is: 15,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.65 : 28,168.29 = 11,460.15 : x
  2. Step 2: Convert to fraction form
    20,410.65/28,168.29 = 11,460.15/x
  3. Step 3: Cross multiply
    20,410.65x = 28,168.29 × 11,460.15
  4. Step 4: Simplify right side
    20,410.65x = 322,812,828.64
  5. Step 5: Solve for x
    x = 322,812,828.64/20,410.65
  6. Step 6: Final answer
    x = 15,815.90

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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.