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Finding the Fourth Proportional to 18,995.19, 28,501.13 and 10,108.42

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Solution

The fourth proportional to 18,995.19, 28,501.13 and 10,108.42 is: 15,167.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995.19 : 28,501.13 = 10,108.42 : x
  2. Step 2: Convert to fraction form
    18,995.19/28,501.13 = 10,108.42/x
  3. Step 3: Cross multiply
    18,995.19x = 28,501.13 × 10,108.42
  4. Step 4: Simplify right side
    18,995.19x = 288,101,392.51
  5. Step 5: Solve for x
    x = 288,101,392.51/18,995.19
  6. Step 6: Final answer
    x = 15,167.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.