Home / 19,485.94-26,888.97-10,990.15

Finding the Fourth Proportional to 19,485.94, 26,888.97 and 10,990.15

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Solution

The fourth proportional to 19,485.94, 26,888.97 and 10,990.15 is: 15,165.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485.94 : 26,888.97 = 10,990.15 : x
  2. Step 2: Convert to fraction form
    19,485.94/26,888.97 = 10,990.15/x
  3. Step 3: Cross multiply
    19,485.94x = 26,888.97 × 10,990.15
  4. Step 4: Simplify right side
    19,485.94x = 295,513,813.65
  5. Step 5: Solve for x
    x = 295,513,813.65/19,485.94
  6. Step 6: Final answer
    x = 15,165.49

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Half scale
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Double scale
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Similar ratio
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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.