Home / 30,807.12-42,516.72-18,233.76

Finding the Fourth Proportional to 30,807.12, 42,516.72 and 18,233.76

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Solution

The fourth proportional to 30,807.12, 42,516.72 and 18,233.76 is: 25,164.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.12 : 42,516.72 = 18,233.76 : x
  2. Step 2: Convert to fraction form
    30,807.12/42,516.72 = 18,233.76/x
  3. Step 3: Cross multiply
    30,807.12x = 42,516.72 × 18,233.76
  4. Step 4: Simplify right side
    30,807.12x = 775,239,668.47
  5. Step 5: Solve for x
    x = 775,239,668.47/30,807.12
  6. Step 6: Final answer
    x = 25,164.30

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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.