Home / 19,943.08-27,521.64-10,990.90

Finding the Fourth Proportional to 19,943.08, 27,521.64 and 10,990.90

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Solution

The fourth proportional to 19,943.08, 27,521.64 and 10,990.90 is: 15,167.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.08 : 27,521.64 = 10,990.90 : x
  2. Step 2: Convert to fraction form
    19,943.08/27,521.64 = 10,990.90/x
  3. Step 3: Cross multiply
    19,943.08x = 27,521.64 × 10,990.90
  4. Step 4: Simplify right side
    19,943.08x = 302,487,538.12
  5. Step 5: Solve for x
    x = 302,487,538.12/19,943.08
  6. Step 6: Final answer
    x = 15,167.54

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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.