Home / 18,838.08-28,271.70-10,080.36

Finding the Fourth Proportional to 18,838.08, 28,271.70 and 10,080.36

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Solution

The fourth proportional to 18,838.08, 28,271.70 and 10,080.36 is: 15,128.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.08 : 28,271.70 = 10,080.36 : x
  2. Step 2: Convert to fraction form
    18,838.08/28,271.70 = 10,080.36/x
  3. Step 3: Cross multiply
    18,838.08x = 28,271.70 × 10,080.36
  4. Step 4: Simplify right side
    18,838.08x = 284,988,913.81
  5. Step 5: Solve for x
    x = 284,988,913.81/18,838.08
  6. Step 6: Final answer
    x = 15,128.34

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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.