Home / 30,668.96-42,303.12-19,506.08

Finding the Fourth Proportional to 30,668.96, 42,303.12 and 19,506.08

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Solution

The fourth proportional to 30,668.96, 42,303.12 and 19,506.08 is: 26,905.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,668.96 : 42,303.12 = 19,506.08 : x
  2. Step 2: Convert to fraction form
    30,668.96/42,303.12 = 19,506.08/x
  3. Step 3: Cross multiply
    30,668.96x = 42,303.12 × 19,506.08
  4. Step 4: Simplify right side
    30,668.96x = 825,168,042.97
  5. Step 5: Solve for x
    x = 825,168,042.97/30,668.96
  6. Step 6: Final answer
    x = 26,905.64

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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.