Home / 18,618.12-25,693.08-10,120.32

Finding the Fourth Proportional to 18,618.12, 25,693.08 and 10,120.32

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Solution

The fourth proportional to 18,618.12, 25,693.08 and 10,120.32 is: 13,966.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.12 : 25,693.08 = 10,120.32 : x
  2. Step 2: Convert to fraction form
    18,618.12/25,693.08 = 10,120.32/x
  3. Step 3: Cross multiply
    18,618.12x = 25,693.08 × 10,120.32
  4. Step 4: Simplify right side
    18,618.12x = 260,022,191.39
  5. Step 5: Solve for x
    x = 260,022,191.39/18,618.12
  6. Step 6: Final answer
    x = 13,966.08

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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.