Home / 18,897.30-26,080.20-10,939.32

Finding the Fourth Proportional to 18,897.30, 26,080.20 and 10,939.32

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Solution

The fourth proportional to 18,897.30, 26,080.20 and 10,939.32 is: 15,097.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.30 : 26,080.20 = 10,939.32 : x
  2. Step 2: Convert to fraction form
    18,897.30/26,080.20 = 10,939.32/x
  3. Step 3: Cross multiply
    18,897.30x = 26,080.20 × 10,939.32
  4. Step 4: Simplify right side
    18,897.30x = 285,299,653.46
  5. Step 5: Solve for x
    x = 285,299,653.46/18,897.30
  6. Step 6: Final answer
    x = 15,097.38

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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.